I use a $20 "Made in China" Dell KB212-B. The ONLY issue I have is that I can't program some shortcut to use the arrow keys via WASD or something, since reaching for the arrow keys in code slows down my typing a LOT, especially since I use it frequently for things like ctrl + -->, ctrl + shift + -->, etc. I also use Home and End frequently to go to end of the line and alt + ^ to move lines up and down.

Other than that though, I have tried co-workers $200 keyboards and see zero difference. I guess the short keyboards are kind of cool to have your hands truly centered when using a mouse.