Great Signal and Speed, Decent but not Perfect Reliability
922765
Pros:
* Gets strong signal
* Position can be changed to improve signal
* Fairly stable

Cons:
* Not perfectly stable

With this I can get a very reliable signal between 20-30Mbps in my office which is far away from my router. With other N adapters on the same computer I could get 5-10Mbps with poor reliability. Before this adapter I was using a very old Belkin G adapter that gave me a reliable 10-15Mbps with very careful positioning.

I used speedtest.net to tune the placement of this adapter (though this only works if you have a good internet connection) - right now it's tacked up to the wall at an angle above my computer desk.

I find sometimes though my WiFi will stop working well - resetting the adapter (by unplugging and plugging back in) fixes those problems consistently. This happens on average once every week or two, and doesn't seem to be related to heavy use (e.g. Steam game downloads work fine).

I've used this adapter with Windows 8 and Windows 8.1 successfully.
2756949
This is a great product, easy to install, configure, etc.  There are some glitches in the setup, such as changing its network address (from 192.168.1.0), but most people won't bother doing that.  One serious problem with the router is that it periodically hangs and stops responding.  I've sent my cable modem provider off on a wild goose chase (just once) when the problem was this Linksys router.  A friend of mine has the same router and the same problem.  But, I hope Linksys will find and fix the problem with a downloadable firmware update
535808
Easy setup. Good range in AP mode. Perfect stable communication in Bridge mode. Works great in both bands. I use to stream video. Never seen a frozen transmission so far. I use it in cojunction with the DLINK DIR-825 router

Update:

I stopped using it long ago. Today I just wanted to use it as a switch and it was dead, Same think happened to my DLINK DIR-825 router. I use to like and trust D-Link. I don't anymore. Out of 3 devices, 2 died and the other one (DLNA) got discontinued very soon after I bought it (no more updates/support).
31716
I purchased the Belkin N600 Dual-Band N+ Router a few days ago from my local Walmart and so far it seems to be holding up pretty well. It works just as well as my old Linksys router which finally gave out after 6 years of flawless performance. I did, however, have a few minor issues shortly after I set up the Belkin router. One issue I had was when I tried to change the default password. The firmware never confirmed that this change had gone through. It simply disconnected me from my current connection and said that it was unable to connect to the internet even though the signal was strong. For a few minutes, I was forced to sign in as a guest until I finally figured out that the password had been changed. As far as performance goes, I give it 5 stars because it connects really well and has excellent range. But I can't speak in terms of reliability because I've only been using it for a few days. I'm hoping that this router lasts just as long as my old Linksys router.
913949
When it works, the signal is very strong, but I repeatedly had problems with disconnecting even though the device showed full bars.  The device also frequently disconnected from my modem despite being placed close by.  Not sure why I'm having these problems, but I'm returning the device because it is unreliable.
3367950
I bought this modem in December. It arrive on December 6th. I called Timewarner and gave them my mac address first before plugging in modem.
Once TimeWarner has your mac address registered, I plugged in the coax and its as good to go. About three weeks later, the wifi stopped working. I have another linksys access point hooked up to the Zoom Modem/Router and the Linksys access point wifi was working. The logical conclusion is since my extra access point was working with "internet access", the modem itself was good. I hooked up an ethernet also directly to the modem and I was able to browse the internet. Again, more proof that the internet is good, but the wifi on the zoom modem was not working. I logged into the unit and went to wifi page and changed my the bandwidth from 40Mhz to 20Mhz and made sure the channel interference level was acceptable. It actually was on the severe level (channel 1) at the moment. I changed that to 11 and all was good. The wifi on the modem was working again. I give this modem 4 stars although it may deserver a 3 star. Hopefully I don't have to change any settings again for this modem, because it should automatically work for many months without intervention. I will report back in a few months to see if it is still running without any kind of intervention on my part. Overall, the modem is excellent in performance and I have experienced no other issues. FYI - Zoom actually recommends changing the bandwidth from 40Mhz to 20Mhz if you experience any wifi issues. Essentially, this bug is well documented.
2180957
I just moved into a new house and running cable would've been a real pain, so after toying with the idea of wifi extenders and such, I saw the good reviews and low price tag for these and decided to give them a shot. In my case there was no setup necessary. I just plugged the two units into outlets in different rooms, connected one to my router and the other to my computer, and everything just worked. I'm getting about 50-60 Mbps and 3ms ping, which is perfectly fine for my purposes. It's not as good as the advertised speed (which is pretty unrealistic in my opinion), so I'm only giving it four stars, but it's still faster and more stable than the wifi would've been, and much lower latency too. I think the product itself is great, they just went a little overboard with the marketing.

I've tried it in several different rooms around the house, and the performance seems to be pretty consistent. Your experience might vary, but my performance doesn't seem to be affected when the two units are on different circuits. The units also work just fine when plugged into a regular extension cord, but not a surge protector. Overall I'm very satisfied and would highly recommend trying these if you're in a difficult networking situation.
4844513
better quality & speed since installing, no more overcrowded wifi from outsiders piggy backing signal
3014945
I find this device reliable and has a good relatively high speed LTE signal.  But the LTE data speed is not as fast as the latest phones.  For example, on my iPhone 6, iPhone 7, or late-model Android device, I can get up to 50 mbps at my home or work.  This device, in the exact same location, will get me 8-13 mbps.  Still relatively fast and definitely as advertised LTE speeds, but not nearly as fast as a new iOS or Android LTE device is capable of delivering.
472289
I rarely ever had a problem for 10 years with my old SB4100 cable modem. Since I've purchased the SB6120 in November '09, I have had one problem after another. It's hard to give up the quick speeds I have been getting with this DOCSIS 3 modem, but I think I will have to get rid of it and look for something else. This one has been a huge mess of resets, phantom outages, and random packet loss. Even right now, I have been waiting to post this review because the stupid thing is resetting over and over. When this is occurring (every day or every other day - for a few hours), I end up seeing between 30-60% packet loss, and it makes doing anything almost useless. I used to blame the cable company for the problems, but I now know it's this piece of trash modem. I love the speed, but the reliability of the modem is pretty terrible, in my case.

*Update 04-30-2011*: The problems I used to have were since fixed by some miracle firmware update. I haven't seen many, if any, resets in a very long time. I am happy with the speeds and the packet loss hasn't been much of an issue other than random and short bursts. All in all, it's been a much more positive experience for most of the last year. I would probably give it 4 to 4.5 stars now.
724856
I loved every feature of this router, but I had too much trouble with the spotty at best 2.4ghz performance, like others had mentioned.  Maybe it's related to interference from the USB 3.0 interference?  I hope Asus gets it straightened out, but I have a feeling the fix will involve a hardware revision, not firmware.  This router is a fantastic value for the performance and features it has, but I've retuned it for the time being.
2677952
works fairly well, drops signal occasionally as well as being unable to handle more than two devices at a time.
3525770
This is pretty good.  Carries the signal pretty well, but sometimes the signal still doesn't provide a good internet connection.  Most of the time though, it works well.
3956127
This is a good, reliable router. I haven't experienced any drops. My only complaint is that I'll sometimes experience sluggish internet speeds for about a minute. This happens occasionally, but doesn't significantly obstruct my workflow and it doesn't actually disconnect. I know that this is a hardware issue because I purchased this router to replace an old one that never had the speed issue, but would occasionally drop the Wi-Fi connection. I use this router to work from home on a VPN and it works well.
3071976
I'm mostly happy with this router with a few caveats. Ensure you have the latest firmware on your router by visiting Leviton's website and downloading the firmware. As of June 2017, the latest firmware was WG4_V2.0.4.4 released September 2015. Mine came with an older version installed. the process to upgrade is simple and is detailed in a read me file in the firmware download.

Frustrations:
1) PROBLEM DROPPING WIRELESS SIGNAL ON (SURPRISINGLY) 5GHZ CHANNEL:
This router affords the option to have two wireless channels, a 2.4 Ghz and 5 Ghz. This is great for having certain connected home controllers, appliances, mobile devices, on the slower network, and the faster network reserved for video streaming, etc. I've had a recurring challenge where my internet will drop from my 5 Ghz channel so I have to switch over to the 2.4 Ghz channel and things will work fine. I'm not sure why this problem exists but it's frustrating. This was occurring before I updated the firmware, so I will wait to see if this issue resolves in time with the new firmware.

2) This leviton router is advertised as having a USB storage or network printer function. When attempting to use the USB for network storage, after troubleshooting with Leviton, the router will only recognize Fat32 file format, and at the time of writing NTFS at the 8GB and 500GB volume size but not 4TB size. This is not mentioned anywhere in the literature, website, etc. It does not like Ex-Fat or OS Extended (Journaled).
1054628
I bought this adapter after reading reviews
the area desktop doesn't get good reception
with other adapter, I only get 2-3 bars, and the rate is so-so (12-24Mbps)
but this one made some real difference
even with stock antenna, I get 3 bars, but the rate is 36-54Mbps!
with 6dBi external antenna, I even get 3-4 bars, and it stays 48-54Mbps

but there's a drawback: it takes long to search my AP (SSID hidden with WPA2 setup), it can take up to 5 minutes to get signal

despite this minor flaw, the fully-customizable antenna gives a potential for better reception

edit: you can enable AP function (real AP mode), search ralink RT2571 driver from ralinktech site
1112630
Bought a pair of these to replace a pair of Linksys WRT54GL routers.

First, the downside . . .
I'd give it 5 stars if the antennas were RPTNC like the older WRT54G (through V4) and the WRT54GL WiFi routers.  They could be removed and replaced with other antennas.  The antennas on these are integral to the case (no connectors), which prevents replacing them easily with higher gain antennas (which I have from the WRT54G/GL routers I had been using).  Apparently Linksys has been gradually phasing out antennas with connectors that allows them to be removed and replaced with different antennas . . . and even newer units (like the WRT160N) have internal antennas.

Other than the integral antennas, these are great routers at a great price (it's gone up a tad since I bought mine).  Stock menu system is typical Linksys with some added features/options specific to draft-n.  Tested them with Linksys firmware and then flashed them with Sveasoft Talisman Basic.  Set them up for draft-n, but otherwise configured them for the same Wireless Distributed System (WDS) the pair of WRT54GL had been used for.  Synced together immediately and all the client devices connected.  I've got the same system that was running at "g" speed with about 25 Mbps end-user data throughput upgraded to "draft-n" at about 75-100 Mbps end-user data throughput (depends on distance of client to closest router) -- all with WPA2-AES security.  Quite noticeably faster than the 802.11g system it replaced, and extremely reliable.

Note that actual end-user data throughput is always about half of the "signaling" rate . . . regardless of router or firmware (e.g. 54 Mbps is the maximum signaling rate for 802.11g -- max actual end-user data throughput is about half that).

While I can cite the stability and reliability of the hardware, I won't remark on the stability of the stock Linksys firmware . . . because I didn't use these long enough with Linksys firmware before flashing them with custom firmware.

I will ultimately modify these -- after the warranty runs out -- by removing the integral antennas and replacing them with RPTNC connectors to allow reusing the high-gain antennas I had been using on the routers they replaced.