I agree about the RF experience and to add, the quality has really gone down since they mass produced them as stereo BBS will bear out from users. I searched and searched info on them awhile back thinking of purchasing one, I didn't. Audio Review has reviews for just about every brand available as well. Go here
http://www.audioreview.com/reviews/

#695 Mk2 BLUE 12Gig

Ask and I may tell you