If you are buying in a store, have a look at the archos - 7" screen I think it was... Either way it has a huge screen and 80gb or other versions for around the same as the epson.
You do get hard drive, mp3, video (playback), jpegs as well... Quality of the built is very good.
Only down side is an additional add on to make it a portable camera reader plus you need the card reader too.
Perhaps worth a quick look though to compare.
Standard electronics store probably has them. Archos link
generation 4... well...
They are a good brand. but perhaps epsons are better?