I have a Corsair K90, which I think is a perfect match for how I use my PC (mainly for gaming, I use another machine for majority of my main computing), it has Red switches, very sensitive, only makes a sound when it bottoms out. The main negative for me with this particular keyboard is that the macro keys and function keys aren't mechanical, which for a keyboard of this price is rather disappointing, but not a deal breaker.
It is also very well built, has a great wrist rest and fantastic backlight that can go rather bright. (Also, the volume scroll wheel thing is really nice).