1. Black shows finger prints. Then again whites have been found to have a chance of cracking. I picked black.
2. AIM uses data. (Just so you know though, even if you never were big into texting, I recommend at least some form of plan with more than 500 texts, cause you will use them... If youve never had an iphone or a similar phone, you dont know how obvious it becomes to text as opposed to talk to your annoying family, associates, friends etc.)
3. it really depends on two things. First, do you need to carry around more than a few feature length movies... if so then you need the 16gig. The other is , do you use playlists, and update them regularly, or do like carrying most of your music collection with you. People who dont mind playing around with syncing playlists and updating them will be fine with the 8gig. (Just so you know, most apps take up very little space, so thats not much of a factor.)