Rio Karma ?
 

I am thinking about picking one up.

Can anyone recommend, or unrecommend?

Looks nice, haven't seen one in person. Amazon's customer reviews (hardly an informative bunch, but still) were somewhat cool on it. If I had a choice right now I'd probably go with the I-river. Nice features! (oh, I have a Zen, I'd recommend it in a heartbeat as well)

I have had one for 6 months now and absolutely love it. I have over 3200 songs on it and still have 4 gig of space left. Rio Music Manager is very easy to use and if you have USB 2.0 you can download songs very quickly. The sound quality is great and the earbuds that come with it are the best of the bunch. It is easy to use and the price is good...compared to an Ipod.

I have been very pleased with it and I use it almost everyday. Read some more reviews and take your time. A 20 Gig MP3 player is going to set you back $250 and up for a good one so check them all out.

Have fun.

I picked up a Creative NOMAD Jukebox 2 LX for $158 from Wal Mart. My only gripe now is that it is not supported on OS X.