I'm currently using a Freestyle 2 but very tempted to get one of the keyboards featured in the linked page.

The main gripe I have with the Freestyle 2 is that I'd like to be able to separate the two keyboard halves much farther. I wish the cord between the two halves wasn't so short and hard to replace.

The other gripes are minor: don't really love the switches, the volume buttons don't work on Linux, and the tilt kit is a little annoying when I move the keyboard around (which I do a lot).