I bought this keyboard when I was upgrading my PC. It is a very responsive keyboard, which is especially noticeable with the flat keys. It does not take much pressure to execute a keystroke, which is a definite plus for me. I've also never run into problems with keyboard rollover while gaming, and this is in somewhere over 1000 hours of gaming since I bought it, spanning many genres of game from MMORPG to RTS to FPS.
However, there are some definite drawbacks that I've noticed. As many have noted already, the touch panel has a tendency to go haywire. This can be especially annoying with the volume controls, which can lead to your pleasant background music turning into a deafening roar in your ears. The touch panel actually has 7 keys; play music, stop music, next track, previous track, volume up, volume down and the cycle keyboard backlight button. All of these have at some point gone screwy for me. The only way I have found of fixing it is to unplug the keyboard and plug it back in.
On top of these issues, the keys themselves will "stick" sometimes(as in one key is not physically pressed down, but the operating system certainly thinks it is). This often leads to my character in a game rotating in one spot, or walking straight forwards or backwards, normally ending in death in-game. Again, the only solution I have found that works is to unplug the keyboard and plug it back in(sometimes I will have to press the stuck key once, as well).
I have made sure to stay up-to-date on drivers, but so far I am still experiencing these problems. Ultimately, I would still say this keyboard is worth considering, as long as you think you can live with the occasional screwy behavior(and I do mean occasional, maybe on average once every 8 to 10 hours of use). If you aren't into gaming, but really like the looks or just a good flat keyboard, this kind of behavior will probably be easier to mitigate.
I mostly bought this keyboard as a matching peripheral for my razer mouse, the deathadder(which I love to no end as it ACTUALLY FITS in my big ol' hands, and like this keyboard is VERY responsive). I think my next keyboard will probably be a logitech one, as there are several of those that have many of the pros this keyboard has, without the weird cons. Most of the logitech G-series keyboards seem like a good choice for gaming.