My favorite are the Majestouch and QuickFire due to their shorter width minus the number pad which I never use. The same quality really. My Majestouch failed on me and it was 2.5X more in cost. QuickFire is highly recommended. Choosing the right QuickFire is important. Cherry keys code named brown, black, blue, red have their own characteristics. I like the Blue keys followed by Brown for coding.
If noise is an issue, it's hard to beat the Apple aluminum keyboards both wireless and wired. I use Apple keyboars on my Win7 boxes too.
Never been fond of the happy hacking keyboard. Keys aren't in the "usual" places. It got about a weeks worth of use. I do like the Ctrl key where the Caps lock is though and I configure that key through the operating system on all my keyboards.