I've been very tempted by this device, primarily for it's hackability (especially with those tasty FPGAs); however, if I get anything it will probably be the Dragon board from fpga4fun.com. It doesn't do a whole lot by itself (unlike the C=One), but it's more appropriate for what I would like to do (build a piece of hardware from pretty much the ground up).
Of course, I already have too many hobbies and I still haven't taken full advantage of that CPLD I got last year.
