Underwhelming Performance. Avoid.
342749
I bought this camera as a replacement to my Lumix DMC-ZS5. I am thoroughly underwhelmed by this camera, and feel that the 4 year old ZS5 outshines this in picture quality and features. The "Scene" mode contains less features than before, and the overall pictures quality is not that great. I would recommend avoiding this camera. I really like the Lumix series, but this particular model is a real dud.
3846059
not worth the money.  lots of background noise and intermittent.
4038603
For the size of this thing, I expected better cooling. When running any major benchmarks on my overclocked Core i7 6700k, this thing starts screaming and can barely keep up. CPU reaches 80 Celsius.
211806
Too light, weak amp. Invest in something better, please.
3571903
I purchased this back in spring, and finally got a chance to use it this weekend.  This was a very disappointing purchase.  Although the hardware itself looks and feels solid, its performance is extremely poor.  The video quality is what I would describe as "barely adequte".  It has a clunky, non-intuitive menu interface which is difficult to figure out.  The left/right orientation switch is permanently set via a switch, which is a good thing, but the up/down orientation is not and it often powers up inverted.  What's even worse is that the ON SCREEN FUNCTION MENU ITSELF frequently shows up inverted...  this is beyond ridiculous.  The claim that "18 infra red lights allow you to see up to 50 feet even in the darkest night" is beyond absurd.  The nighttime performance of this camera is terrible, very grainy, and even objects only 20' away are barely visible in the monitor - and the IR lamps only illuminate the very center of the camera's FOV.  Objects to the sides are not visible at all.

I would strongly discourage RV'ers from purchasing this camera.  In an age when even $60 dashcams have outstanding resolution, and exceptional nighttime video performance even without IR illumination, the poor video quality of this camera setup is inexcusable.
374335
Sound quality is atrocious.  I plugged it into my MacBookPro, and the sound was very flat and dull.  The *internal* speakers on the MacBook sounded considerably better.  Pass on these if you value sound quality.
3430519
Unbelievable laggy wifi performance. completely waste for FPS gameplay
1199783
Disappointing performance, especially for the money.  I have used an RS120 for 2  years with great success, so when I moved into a new house I decided to upgrade the headset for my primary TV.  I use the headphones to control the sound when watching TV with my spouse, or when walking around the house as I do chores.  With the RS120, I could go outside and down a flight of steps to the front yard while walking my dog in the middle of the night.  With the RS165, I can barely get a reliable signal 25-30 feet away through a wall or floor.  For the price, and mistakenly assuming technology was improving, this is a real disappointed.

In addition, I found the controls easier to use on the old unit, including the volume control and on/off switch.
4558368
At first I found that the Predator Z271 is excellent for 1080p gaming.  I'm was using this with dual/SLI GeForce GTX 950 and getting great performance with G-Sync enabled.  I was simply amazed.

My opinion is that the onboard speakers are terrible and just about useless.  Imagine if you took your mobile phone, set it to play some music on its own speaker, and put it inside a closed shoebox.  Acer should probably try and improve on this in the future, or just exclude onboard speakers and bring the cost down a bit.  I ended up buying a pair of AL-202 small cube USB powered speakers (only around $12).  You can plug them right into the monitor's USB and Audio Out jacks in the back:&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/AL-202-High-fidelity-USB-Acoustics-System-Powered-by-USB-for-Laptops-and-Desktops-Cube-Speakers-Gemini-Doctor/dp/B00CXLQGSY/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">AL-202, High-fidelity USB Acoustics System, Powered by USB, for Laptops and Desktops, Cube Speakers, Gemini Doctor</a>

The 27" 1920x1080 144Hz display is clear and bright, and very adjustable.  The configurable ambient lighting shoots down from the bottom, and made for a nice effect with my glass desk.  The curved screen helps with glare and seems more natural to look at vs. a flat panel.

Originally I gave this monitor a 5-star review.  Unfortunately, after three weeks of use I began to see yellow banding in certain shades of gray.  It went away, but a few weeks later it came back with blue banding... on and off for about a week.

I have included some photos of the problem, showing both a grayscale and RGB test gradient side by side with a second monitor.  The grayscale shows obvious blue where it shouldn't be.  The RGB shows some distortion in the darker end of the blue band.  The area of distortion was also flickery and unstable.  Each time the problem showed up, it was in a different section of the dark blue end of the gradient image... other than the first time I saw it when the distortion was yellow.

I owned a Dell Ultrasharp 24" for almost ten years and had zero problems with it.  I just wanted something a little larger, and with the 144Hz refresh so I gave this thing a shot.

A terrible disappointment, I returned the Predator Z271 and went with the Lenovo Y27g Razer Edition.  It has similar specs, same price, and I'm hoping better quality.  So far so good.
4747168
Very low volume/gain, and terrible sound quality.
654807
Purchased 10 December 2015.

This device does not perform well.  The sound is not as full and powerful as advertising led me to believe.  1000 watts?  How?  The "Function" key won't change function half the time.  The software (i.e. - Netflix processing, etc) is PAINFULLY slow - had to go through new Vizio TV which is much much faster.

Software on other functions (i.e., Bluetooth, just turning it on and off) also seems very slow.  It's like a really old computer.

HDMI ARC function plays sound only in 1.5 second bursts.  Just set it up.  Plugged optical cable in and now it works correctly.

Overall, though, just so-so.
4625273
Nothing but problems.  System operates sluggishly during basic task.
4587402
This is not very impressive. I tried it with different PCs/LAPTOPs. It does not perform well. I just ordered a couple of new ones.
1325070
Upgraded from a Logitech G430 and Im disappointed. Sound is flat. 7.1 surround is garbage due to the usb adapter. Adapter causes microphone connectivity problems. No gui based driver software to tune it. Looking into Logitech, steelseries, or others
1080727
If you want to combine mediocre performance with excessive expense, the Jabra PRO 9450 is for you!  Combine bad connections resulting in crackling and a tin-like sound on many of your calls along with controls that manage to somehow not always work with radiation similar to planting your forehead on a microwave door while heating up your popcorn and you have the Jabra PRO 9450!  There is a remarkable lack of flexibility in the software and it is clear that ergonomics for comfort was not a concern in the design of this item.  If this headset were not purchased by my employer, I would certainly seek to return it for a refund, or failing that dunk it in the trash at the first opportunity.  Save yourself by not buying this garbage.
4223657
Incredibly slow performance.  Used for my office computer.  The mouse has "pause" moments where it will loose connectivity even with fresh batteries and the keyboard will not keep up with my typing speed.  I'm not very fast, but do type at a good speed.  Get something else.
4177009
The performance leaves alott to be desired. I frequently have issues with the modem hibernating nad not recovering with out a  reboot.