I'm about to buy my first mp3 player. My choice is limited, being a Mac user. It seems that iPod and Archos are my best options, Archos winning out on battery life with the 202. I have been using md for many years, usually recording on the LP2 setting, and use shure earbuds. This combination was easily good enough for me, in listening terms. I'm nervous about mp3, will it sound ok? What do the bitrates mean in terms of good, medium, bad etc? How many cd's roughly will I get on a 20 gig player? I'd have stuck with md, but it's fizzling out, becoming obsolete.