If you parents have a cellphone plan (under verizon or at&t or whatever) they might end up adding you under it. The phone you can get heavily depends on what service provider you have, because a lot of phones are only available for one or another.
But I dunno. My experience is that any phone with things like mobile web, GPS, and music players are crap. They just aren't done very well, and the OS for them is clunky and difficult to use. The iPhone is about the only phone that does it well, but really, do you even need all that crap? For instance, I have an
LG Venus. It has an mp3 player, but the file system and organization for it makes it IMPOSSIBLE to find the song you want. And it took me about 2 months to find a pair of headphones, and an adapter that would work for them. The GPS is absolutely worthless, the mobile web looks like shit, and it has a neat touch screen, but it's very unresponsive, and it's already scratched up because it's not resilient at all.
I'd look for a solid phone that has a camera and that's about it, lol.