My under two-week old 8 gig has a small scratch on the screen and I've already used up more than half of the storage space. Do you think I could return it to AT&T and get the 16 gig without any problems? I don't mind paying the 10% re-stocking fee. I've also thought about buying one of those refurbs and selling it to cover the cost difference. Do you think that would work? Thanks.