i use the tascam-US-122 for my recording and it sounds good to my ears. It is USB 1.0 so it can only handle up to 2 tracks recording at a time. I can record in 24 bit and at 48 khz which is better than CD quality (cd = 44khz/16bit)
It has two nice built in preamps for microphones, phantom power for condencers, line in for that kind of equipment, zero latency monitoring (very handy), and midi. its a breat little unit with well designed WDM and ASIO drivers.
lots of people use 'em at
www.homerecording.com/bbs check that site out for more reviews.