I had an iPod touch that I used for college last year. It’s a good product; I really enjoyed being able to go online & use different apps with it.
However, I had to return it after a week, since I’m a guy with big fingers & it was a pain trying to touch the correct buttons. I tried but it’s just too small, just like many phones nowadays.
Either way what are you getting it for? Music? Shiurim?…I just downloaded 70 (1-hour long) shiurim onto my mp3 player (it’s actually a Sony ICD-UX200 recorder) last night & it took up less than 1GB, so maybe that can give you a ball park figure of what to look for if that’s what you are using it for.