I've yet to find a keyboard with which I'm really happy. Going back a few years, I started with a generic Model M-like tank of a keyboard, with buckling spring keys. I eventually became unsatisfied with the typing noise (it was distracting to me and my office-mate) and its sheer size. A large part of the footprint of the keyboard was its plastic border, which served no function. It also wasted space with its numeric keypad, which I never used. The problem with keyboard footprint is, while I try to keep my hands on the keyboard as much as possible, when I reach for the mouse or trackpad I don't want to swing my hand and arm too far to the right -- too slow, too much of a context switch, and too painful in the long run. Having to move past a numeric keypad was a pain.
Speaking of pain, I also worried about the position of my hands, so for my next keyboard I bought an ergonomic wireless model by Microsoft. It solved the footprint problem by having the numeric