Clearly results with the Linksys RE6700 vary greatly from one unit to another.
580329
I bought th RE6700 Linksys AC1200 wifi extender at Walmart not at Amazon but I usually buy much of my tech through Amazon. This unit has been very disappointing. I went through the manual setup as the wireless router from the ISP provides me with no administrative control. I was easily able to get the extender to connect to the router and have it fully setup in minutes when it was only 15 feet away from the router. Upon attempting to move it to a kitchen outlet, just under 4' off the floor and 18 ft. away it had issues staying connected. I tried another location with even fewer obstructions just over 30' away and it connected and then fell away again. I moved it to a more elevated location with roughly the same amount of obstructions, minimal, and then it connected for a few minutes and then lost the connection. My iPad and Samsung tablets can both connect with 2.5Ghz and 5Ghz fine in the same location. From the middle of the small house less than 30' away pretty much all the devices connect. In the back of the house I can even stream to my iPad on the 2.5Ghz radio but the signal is weak due to obstructions. Well, for an extender to be in the middle in a zone where pretty much anything connects and holds solid is pretty lame. Would  I recommend this? Not based upon my experience. I plan to return it and move on to another solution.
352221
Worked fairly well, but the unit I had was defective.

Would constantly loose it's IP Addressing and never be able to fix itself. Linksys support could not troubleshoot the problem. They were helpful with the general install.
4856933
A world of difference in reliability of throughput and speed, both up and down, wider, more powerful wifi radius.
595164
I have purchased at least 7-8 linksys routers in the past and they were great until the last one, ea2700 which I purchased two of them (myself and somebody else) and let me tell you. the worst purchase ever, since I have new AC devices at the house decided to give this little guy a go and let me tell you. it impressed me! downloading files on the 5ghz AC at ~30 to 32MB/s (ACROSS THE APARTMENT!!). This is going thru 2 walls and this is the slowest connection I have seen. I have had it for about 2 weeks now and have yet to restart the device once!
2850118
I moved to linksys E2500 from a previous WRTG-54, signal strenght is better, reach is greater, speed is improved, and, also, design is very much enhanced.
4900319
After having had both the Belkin Router and the Linksys Router in the house (had to switch due to DSL provider) and having had both Belkin and Linksys PCMCIA and USB adapters I can summarize very quickly:
Maximum distance from the transmitter in our setup is about 90 feet, across two floors.
The PCMCIA adapters are really flaky at this distance. Rather than the 11Mbs, we often see it drop down to 5.5, 2, even 1. They are sensitive to angle and obstacles. The USB adapters can be placed up to 5 feet away such that they have a good "path" to the transmitter.
This Belkin USB outperformed all other three units as it always gave the strongest signal. Noticeable better performance doing anything on the network or over the DSL modem.
But - here's the caveat: DO NOT USE THE INCLUDED CD.
Using the included CD we had POOR performance, and didn't understand why we couldn't even achieve 100% signal strength in the same room as the transmitter!
Upgrading over the web fixed the problem, and we have had a very reliable connection since.
4971448
Holy crap what an improvement. I'd been using the ever-reliable Linksys WRT54GL for about 5 years but the recent purchase of a Synology NAS required a gigabit router in order to achieve decent file transfer speeds. I didn't expect such a huge increase in WiFi speed as well but that's exactly what I got. Went from a MAX of about 16 Mbps/down to 28 Mbps/down on my very first speed test. The setup was ridiculously easy too. I thought for sure I was missing a step, but nope, it was ready to rock. I'd highly recommend this router for anyone looking to upgrade their home network.
3191066
The Linksys PLSK400 kit is worth the money.  I would have given it 5 stars, but I had some real problems installing it.  The Quick Start guide is worthless.  Go to the Linksys website and download the Utility they have.

My installation is from one end of my house out to the garage workshop at the other end ... apprx. 300'.  I had the devil of a time getting the base unit and the remote unit to sync up.  I knew I had done the hookups correctly, they are simple to do, but the part that didn't show up until later is:  Wait 5 minutes after hookup for the 2 units to sync.

I was afraid that Linksys was going to say both units had to be on the same breaker/circuit.  I have 32 breakers in my new house ... you can imagine what my fear was.  But, all worked out in the end.  Just install correctly and then wait.  Be patient and it will work.  I've got a 100Mbps connection.
644604
Works better than expected with much further range than expected.
2517878
Just purchased this router and have found it to be exceptional. It replaces an older Linksys E3000 of which performance had become less than satisfactory given the number of wireless devices I have accumulated. The WRT1900AC is supporting a Roku, Sony Google TV, Nest Thermostat, a HP Officejet 8600 Pro printer, and Epson WF7510 printer and 2 Bose Soundtouch devices all through Wi-Fi. I have not experienced any of issues that have been identified in all the reviews that I have read thus far. Setup was a breeze, I disconnected my old router installed the new one according to the instructions. Launch the web interface, changed my SSID and password that was setup for my network. I was connected to most of my devices. The others that did not connect, it was just a matter of powering them off and back on. The coverage within my 1800 sq ft single story house is amazing. The device that was giving the worst Wi-Fi performance was my Sony Google TV. Getting strong Wi-Fi signal to watch YouTube or Netflix was largely hit or miss. Now that device works as intended. With the old router I tried to expand the signal using a Linksys RE1000. That device had problems extending the signal satisfactory. I do have it installed an connected to my network, but honestly, I do not need it. When I first installed the new router. I did not connect it to see what the coverage would be and as I stated before it was excellent. As an experiment I connected it. I was one of the devices that required to be powered off and on to get a connection. I did that and it connected. My experiment was to see if using the RE1000 would degrade the signal. I did not and it has not. So I'm leaving it connected. From my experience so far, I would say this router is a hit. Issues that I have read about it rebooting when you use the web UI has not happened. I have not had an issue with the Nest thermostat disconnecting. Everything to date work as expected. The only downside about this router is it is expensive.
3665133
I decided to upgrade my home wireless router from a Zoom cable modem with built in wireless to this Trendnet AC3200. At the same time I purchased a Netgear CM500 cable modem with 16x4 channels where the zoom had 8x4 (downstream x upstream channels). Before I started I ran some SPEEDTEST.NET tests to see performance before upgrading the modem with built in router and the new AC3200 router with the netgear modem. After configuring the new router I again ran some SPEEDTEST.NET tests. I have the Ultimate level of Cox cable advertised rate of 150 down and 20 up.  Also I upgraded the firmware to the latest Trendnet firmware before starting.

TYPE  BEFORE  AFTER
  DOWN  UP  DOWN  UP
Wired  147  23  192  23
Wireless  22  10  192  25

I have never seen wireless go so high I was floored and thought it was a mistake. Nope its for real. This thing in combination with the new netgear just smoked all stats I have ever seen.

CONS:
Not really a con since I get signal now in all of my house, where I had drop-offs with the Zoom modem/router. but the 5G signal is less bars than the 2G signal. Still ok because I  still get 192mb down even with 2 bars on the 5G (where the zoom failed to connect)
1827991
I posted a handful of pictures that show my signal-to-noise ratios.  Measuring my wifi network strength helped me identify whether my efforts to adjust the settings (channel, width, placement, etc.)  were improving or worsening the situation.  I had an older Linksys WRT160Nv3.  I started to notice that my network was getting slow, and even having so much interference from other Wifi's in the neighborhood that could hardly use it.  It even dropped the connection with my devices at times.  So, I downloaded some tools to help "see" what was going on (Wifi Explorer and NetSpot for Mac).  I improved things at first with changing my channel again (looked at though a number of additional routers are around than when I last configured mine) and to narrow the bandwidth to 20 (from 40), to minimize collisions with other routers.

This helped... for a while.  The problems kept coming up.  So, I decided to look at 5 GHz.  Only 2 other routers in my area seem to even use it, so there was plenty of room.  Time to pack up and move out [of the 2.4 GHz space].  In the end, I decided to go with the EA4500 for it's higher speed ratings (although it seems most of my devices individually cap at a 300mbps link speed).  I hooked it up in Bridge Mode, so I could still use my DDWRT-loaded WRT160Nv3 as my connection to the Internet (various reasons including detailed firewall monitoring).  I took my measurements to see what the signal-to-noise ratio looked like.

First, I looked at the 2.4 GHz.  Wow!  The signal was SIGNIFICANTLY stronger.  Interference didn't seem to be an issue.  I was getting about twice the transfer speeds (tested large file transfer to a system connected via gigabit to the new router).  Even in area in my back bedroom, where signal dropped, things were running near speeds when I was in the living room (close to the access point) with the older router.

Then I measured and tested the 5 GHz range.  The signal-to-noise ratio seemed to be slightly worse than the 2.4 GHz band, but still better than the older one.  I expected the signal to be more susceptible to interference from walls and such, as that's normal for higher frequency signals.  But when I measured actual transfer speeds at key points... WOW!  It was 3 times that of my older WRT160Nv3.

The EA4500 is definitely a winner for me.  I tinkered with the position of the router, and even considered mounting it up higher on the wall... but when testing, it only gave me 20% more transfer speed in the back rooms, and I was already well within acceptable ranges for streaming HD to the small TV in the bedroom (even 2 streams).  So, the added work of mounting it and running wires aesthetically wasn't worth the 20% more.  :)

I know things may vary for people.  Personally, I suggest downloading some tools (like the ones I mentioned above) and taking measurements with your laptop.  This will help show you what is interfering, and give you a decent view of how much improvement you may be seeing.  For me, this is a HUGE upgrade for me.
1890287
Very pleased with the ease of setup and performance right out the box. I had an Linksys WGRT model that was getting around 32Mbs and now it us able to reach 62.3Mbs. I been paying for 60Mbs and never getting close.

 I tested it with Netflix while playing PS4 and it didn't lag like it use to. At first it showed a little lag but recovered immediately.
2650355
I can understand some of the customer frustration voiced on this product because I initially had problems trying to get any real throughput. One day, I thought I'd try to go through the entire setup pages and change each setting one by one to see whether there was any improvement before finally giving up and joining the chorus of disgruntled customers. I have cable modem service and was getting in excess of 10Mbps downstream via Ethernet connection, but when when using WiFi with this router, I was lucky to get 1 Mbps.

When I finally changed the setting for Bandwidth from 20/40 to just 20, everything changed and I had superfast throughput. My assumption was that the default setting of 20/40Mbps meant that it provided a higher 40Mbps bandwidth to those devices that were capable of the faster speed. But for some reason , this throttled the throughput. This simple change solved my throughput problem.
3825587
I purchased one of these units about 4 months ago and have had reliable performance with this unit when connecting to an old 802.11b router.
Over time I noticed that the router was having problems with signal strength with this adaptor and with other wifi cards.  I purchased a D-link WAP 2100AP which did not work due to compatibility problems (see my review for that unit), and then a Linksys WAP54G.  It was a bear getting the two units to talk together, so I thought the problem was due to a firmware issue with the adaptor.
Trying to upgrade the firmware on this MN-740 adaptor was next to impossible.  Eventually I found info on a newsgroup which said that the firmware upgrade would fail if started on a PC with an ATI video card.  After finding a newly built machine with an NVidia video card, the firmware was upgraded easily.  However, the problems still persisted.
After much troubleshooting where the Xbox network adaptor
(MN-740) would drop the network connection as soon as I attached the XBOX itself to the network adaptor, I realized that the reason this was happening was the MAC address filtering.  In order to have the network adaptor actually join itself to the network, you need to add BOTH the MAC for the adaptor itself AND the MAC for the XBOX into the MAC address filtering ALLOW table for the Linksys access point.  I am surprised that this information was not in the user's manual for this unit.
Right now I'm working fine with MAC filtering enabled and 128bit WEP turned ON as well.
= = =
The two things that this unit lacked are:
1.  Poor reliability of firmware upgrades and lack of documentation speaking to incompatibilities with ATI video cards.
2.  Lack of any documentation speaking to the need to add the MAC address of both the Xbox and the adaptor itself into the allow table of a WAP if using MAC filtering.
Other than those two caveats, I would highly recommend this unit.
2711906
First router I received had some major issues, 4 of the 8 Ethernet ports were not working, and although the wifi had very fast speeds, there was some instability of wireless devices on the network.

After returning the first one and ordering a replacement the router rocks now. I am able to use the full bandwidth of my gigabit fiber internet connection. All wired and wireless devices are stable, any the network is performing at peak performance.

Some notes: On the good unit my wifi speeds were not performing as high as I expected until I configured the position of the antennas like the manual stated, specifically the two side antennas should be at a 45 degree out from the router.
1659656
It seems my apartment (about 25 years old) has LOTS of interference of all kinds.  I have a Cisco/Linksys E4200 wifi router which cannot even give me full signal 20 feet away on 2.4 or 5Ghz.  I tried the previous generation of these units and would usually get around 40-60 Mbps which was ok.  However, it wasn't reliable enough for DLNA streaming to my PS3 from my (wired) computer.  Now, I get ~180 Mbps up/down with these new units.  Of course, they should be able to do more but I think my electrical wiring is subpar at best.  There was zero need to install the software to get these working.  I simply plugged them into outlets, connected ethernet cables, and everything worked immediately.  The software is good to see the bandwidth you're achieving so you can try moving to differnet electrical outlets for better results.