It does eat bateries a bit quicker than I like
I got mine as a Xmas pres, not my initial choice, but as I didn't buy it I ain't gonna complain (yet!) It is used for my 2-2½ hour daily total commute time.
Loaded the software ok, though I tend to use RealJukebox as the interface. Haven't yet upgraded the firmware (currently v1.15) and looking at other reveiws I don't think I'll bother.
I would like to get the 340MB backpack, yet cannot find any mention of this on Rio's site, nor can I track down any mention of this anywhere on the web :-(
I like the shape and use and can get approx 35-40 tracks (mp3s @ 64kbps) onto the 64MB memory. I am using my preferred (better) earphones than those supplied - musical quality is very good IMHO - and I play a wide range of musical styles (classical, rock, punk, folk). Buttons are a tad fiddly mind.
What does pee me off is the way it eats batteries - Rio alledge 11 hours from a single AA - yeah right! if the volume is at setting 1 perhaps! I rarely get more than 3 days use (approx 6-7½ hours) out of a Duracell AA.
In summary then, it's good, but could (and SHOULD) be a damn sight better.