Go to Best Buy. Buy the Palm M515. I have had several and it is sweet. You can store images, open office files (word, excel, powerpoint), and sync you email (if you need that).
If you don't need all the crap I mentioned above just buy the $99 one. It will be all you need if you just want an address book/organizer. Then again for only $200 more you get the works.
Go to Best Buy and play with them a little and see what you like. The people there can help you with them.