Pda phone review

Need to find a PDA for specific data-storage functions?

I need a PDA or other such device which can:

1. Store up to 4 GB of data
2. Be able to run software like Adobe Reader, WinZip, etc.
3. Have a colour screen and a keypad (not a touch-screen!)
4. Does not necessarily have telephone or internet connectivity, but must be able to be linked through usb.

I can’t exactly think of a price range, so go ahead and suggest a device. Thanks for your time!