Best keyboard on the market
349826
Unit arrived in great shape. Plugged in and played right away. No problems were noted. And performed to buyer's satisfaction..
779795
This is absolutely the best wireless keyboard on the on the market. Expensive feel but priced right.
2502127
Far Far better than aftermarket keyboards, should've bought this years ago.  The lighted Keyboard is the best feature.  Tell you the truth this keyboard had too many features.  Does not use up batteries any faster.
3333092
This keyboard is amazing, I have five, having beaten some very, very old ones to death, and my girlfriend's an owner as well.  There is nothing else even close except for those ugly but slighly better laid out, super expensive maltrons.

Pluses:

* These are a dream for hardcore Emacs users and gamers with games that allow key remapping.
* These are especially well suited for touch typists who can leave both hands in place.
* These are fine for VI users using the HJKL motion defaults.
* These are great for making a lot of modifiers easily accessible for heavy X windows users (my Caps key is mapped to Hyper, for example, for window manager shortcuts.
* The keys are Cherry, a great mechanism, with a linear force option variant if you're into that.
* If the keys aren't loud enough, you can add software keyclick as well (keyboard settable)
* Kinesis support has been great to me for over a decade.
* They look great
* They balance well in the lap, thanks to not having a stupid side keypad and some accidents about the underside's design.
* Good multikey support (critical for gaming).
* Totally eliminates RSI for me (though some users cursed with double-mouse-click paradigms may need to fix that too for both wrists to be happy)

Minuses:

* The chiclet function keys are the part I like the least, but they're much better than they used to be (the Maltron keyboard has fullsize keys, the single best feature for Kinesis to copy someday)
* There are some obscure keyboard combos that change keyboard function a bit, which can be really weird once a year or so unless you read the manual to figure out which one you're hitting. This got weirder in more recent years when they added more of them, but I think there's a redesign of the firmware planned to cean it up, and it may have happened already.
* The arrow layout (2 on left hand, 2 on right) is bizarre, but trivially fixable by remapping, though I've never bothered.
As a gamer, all the thumb keys were second nature within about 10 minutes, but it took two weeks to get used to the shift keys, even though they're in the same place as on a standard keyboard.  Weird.
* One finger typists will have to do a lot more work traversing between keywells.  I suggest learning to type, of course.

That's it.  I love these things.  Considering the amount of time I spend pounding on them, the price is negligible.
2190461
I have had this keyboard for years now and I must say it is one of the best ones I have ever used. Key are smooth and clear. The letters have never rubbed off like I have read about on comments about other keyboards. You have the choice of either red or blue illumination and brightness control. My personal choice is red because it seems easier on my older eyes. It has an up down volume control along with mute button which I have used many times, especially when listening to music or videos and receiving a phone call where you must turn down or mute the volume. Something that is really important is the length of the cord that connects the keyboard to your computer. If your computer sits under your desk like mine does you need the extra length so the cord will reach easily. Most key boards only have five feet or so , but this one has a whole 7 feet. No tugging or pulling making it very comfortable to fit your position at your desk. Contrary to another review I read I must say that I enjoy the enter button being two keys high instead of two keys wide. It is also a little wider at the top of the key making it easy to fine and makes it easier to tap with my fingers. The keys have never stuck which I see is a problem with other keyboards and key travel is light. Some keyboard I have tried in the past have keys that are like children's wooden blocks. All and all I must say that with all of the options out there with choices of keyboards if you buy this one you will be happy with it for years to come. P.S. I am also using a Logitech Corded Mouse ( M500 ) which I find is the best. Very comfortable and will last probably forever. And remember, you never have to worry about recharging or batteries because both of the units are corded and always ready to go when you are.
1349511
It's not my first one. But I would say MsNEK 4000 is the best keyboard ever.
3871550
This keyboard is amazing. Let me go over some key features.
DESIGN
The keyboard feels really great in your hands, especially with the apple design with the silent scissor switches. Typing moves lightning fast, but it takes some getting used to when switching between the regular windows keyboard.
Overall Score in DESIGN: 8

RESPONSE TIME
No issues yet!
Overall Score in RESPONSE TIME: 10

BLUETOOTH SWITCHING
Works perfectly but can be a real pain when you accidentally click a key and forgot which one your PC is connected to. You have to repair it and exit out of whatever you are doing.
Overall Score in BLUETOOTH SWITCHING: 6

BATTERY LIFE:
This is the most amazing part of it all. The battery lasts 2 years! The charging system is not complicated and it takes a couple hours to charge.
Overall Score in BATTERY LIFE: 10
4868910
Just wanted to leave some love here. I've been using this keyboard for over a year now and everything still works great. The Customization software is really powerful and those GKeys are super helpful. I use macros at work every day to speed up my workflow. This is by far my favorite keyboard.
The only thing that could be improved, would be if it included 1 or 2 usb ports. It takes up 2 usb ports on my desktop, so it would be nice if I could plug phone chargers or usb sticks into the keyboard itself. But everything else about it is so great I wouldn't trade it for another keyboard that had that feature.
1421880
I believe I received this as a Christmas gift two years ago and I have to say, this is an incredible keyboard. There is no better keyboard than this one for durability. This keyboard has taken an unbelievable amount of abuse where other keyboards would have cracked or broken, this one continues to work flawlessly. One day, I needed an outlet to vent my anger and frustrations and decided to take it out on this innocent yet nearby and handy keyboard. I struck the keyboard many, many, many times both in the back and the front. These were not light hits. Surprised there were no cracks, I tossed the keyboard in a drawer and forgot about it. Six months later I decided to try connecting it to my desktop. Low and behold, it still works and types flawlessly. I'm truly amazed.

In terms of functionality, there is a multi device switch that is very convenient and the batteries seem to last a long time despite me leaving the keyboard on for days at a time. The range and response time is also very good, I have not had any issues with either. Despite the smaller size, it is easy to type on due to spacing of the keys. I do wish the power switch was on top rather than the bottom but that may be more personal preference. It is fairly compact so, I do keep it in a bedside drawer. I use the keyboard to control movies or tv shows from my computer when I'm in bed.
4485720
Perfect.  Best keyboard.  Simple and effective.
4901001
Okay going to make this simple.  I do IT work and have been through a million keyboards.  Do yourself a favor and buy this keyboard it's the last one you will ever need!
1687328
I absolutely love this keyboard. As a professional software developer and occasional writer, this keyboard feels amazing to type on and the volume control and magnetic bar make it even more seamless to use. It's definitely loud though so keep that in mind when purchasing it.
163750
This keyboard is amazing. The keys sound great and the feel nice and smooth. It is also very durable. I don't think i will ever need a new or better keyboard.
293837
I've been using these for years, and I honestly can't imagine buying any other kind of keyboard. I love this so much because of all the function buttons as well as the keys being fairly quiet when compared to the competition. When you work all day on the computer, a quiet keyboard is a MUST!
3526897
If you are looking for an upgraded (mechanical) keyboard with extra button functionality seriously look no further. I can't even stress what a huge difference this keyboard feels like compared to basic Logitechs, mid range keyboards or off brands.

First thing is first: the board itself is beautiful, brushed aluminum board feels very solid and looks great. The G key section is plastic and clearly an add on but I can live with that.

The MX cherry browns are lovely, there is no other word to use. They feel sharp and have great feedback. Yes they are a little more noisy then a membrane keyboard key, but so what. That's one of the joys of the mechanical keyboard anyways!

The lighting is very sharp and crisp. It does spill out around the keys a little bit, but not so much that it washes adjacent colors out. It also has adjustable brightness (off, 33% 66% and 100%) so you can adjust the brightness as needed. It has 3 profiles that can be adjusted on the fly right on the keyboard changing whatever the color and button configs are for each. The volume control wheel and media keys are very nice to have, and while you may not think you'll use them a lot, you will. It's so nice having them right at your fingertips.

This keyboard requires TWO, USB 2.0 ports open to use. It does say you can use a single USB 3.0 port but for some reason mine did not seem to like that, perhaps I will try again with a different port. But I have plenty of 2.0 ports open on my machine so I've been using it that way and quite happy with it.

The biggest knock I see on this keyboard is the software required to edit the programming of the keys and lighting. Yes it is a little daunting and cumbersome if you plan on making complex macros and you're own color patterns (flashing, gradients etc). But, if you just want to assign just basic colors to the profiles and simple G key commands it's really not that bad. I was surprised with how quickly I picked it up in the first 5 minutes.

The best keyboard for the dollar by far on the market right now. Don't even think twice about it, you'll love it.
356301
I absolutely love this keyboard. This is my second one in less than a year, and that Is completely my fault. I spilled coffee on the first one and it was ruined. I did so many things to get it clean and try to get it to work again, but It just was not happening. So here I am purchasing the 2nd one because I  loved the first one so much.

First off, the keys on this, I believe I have the Cherry MX keys. They are great. No problems out of them at all. Love the taptic response and the way it sounds and clicks when I'm typing. The RGB color scheme is pretty neat too. I don't really pay it much attention, mostly because I'm staring at the screen and not my hands. But it is great the amount of colors and schemes it has.

I would definitely recommend this keyboard to anyone, not just gamers. This is a great typing keyboard and a great gaming keyboard. If you are in the market for a reasonably priced keyboard that will last a long time, I would recommend the Corsaid K70 RGB!
2587828
Absolutely the BEST keyboard I've ever owned.  As a programmer, I am quite picky about keyboards.  I've probably used dozens of different keyboards over 30 years, but the K750 is the most comfortable, productive, responsive and practical keyboard I've ever used.  I know keyboard preference varies greatly from user to user, but everyone I've recommended this keyboard to loves it.  Besides usability, not having to change the battery EVER is icing on the cake.  It just feels right when you type on it from the key height to the tactile feedback to key spacing to the key layout.  It fits nicely in a laptop bag and has an easily accessible on/off switch so you can clean it without random keystrokes being sent to your computer.

Are there additional features I wish it had? Yes!
I wish it was backlit.  They would have to accommodate 6 star reviews. :)
I wish it had dedicated multimedia buttons, but then the key layout may change.
I wish it had a wrist wrest, but then it would be bigger.