Eh, not all it was supposed to be ...for me anyway
KFlow "wandering but not lost", Amazon
14 November 2013
Summary: Cool board but mine seems to have a gremlin in it. Randomly just stops working , have to unplug then replug it and even then sometimes that wont work. I love the overall fall of the board just , kinda disappointed it only sometimes feels like doing its job.
Summary: This keyboard has been great for me. I don't mind the lack of click that comes with Cherry MX's to alert you that a key has been pressed. I use the keyboard for both writing related to my academic pursuits and gaming as related to telling n00bs off and rapidly typing 'power overwhelming' when I try to play starcraft.
Excerpt: Just not worth the money. Honestly, the K90 is uncomfortable to type on, and only offers MX Red switches. For 139$, I would expect at least some options. Sadly, Corsair doesn't give us any options and only offers red switches. The excuse is that it's best for gaming. Well, actually the best switches are all in personal preference. Some people like browns over reds for gaming, typing, etc.
Summary: What I expected to receive was a decent quality keyboard that was illuminated and had programmable keys that I would rarely to never use, but what I actually got was a wonderful keyboard with really good ergonomics, and usable programmable functions. I never found much use for the play pause buttons etc, because you really cannot see them, but the volume, mute and other functions work much better than expected.
Best Keyboard I've owned after using for 6 Months.
Eric F Lucey, Amazon
6 May 2013
Summary: You need to be prepared for how light the keys are. When you first get it, if you're not used to MX blues or MX blacks, you'll probably make a lot of errors on this keyboard. You cannot feel any actuation. None. It is not physically there. But it is VERY consistent. The actuation is perfectly centered on the MX blues to be dead center and if you're a light speed typer or gamer you can get 200-300 words per minute.
Summary: First of all, it's a great keyboard except for the few rubber keys they added to the mix. Support is also great. But, you might be talking to support quite often. Just log in to their support forums and/ or google K90 "stuck keys" or "dead". When I had first received the keyboard,I had faced the "stuck keys" issue. Specifically, a random key press would get stuck until you press another key.