Prospective User Needs Guidance

This is a continuation from my thread in the introductions section so I can actually ask some questions and hopefully get the direction I'm looking for.

http://androidforums.com/introductions/275801-likely-future-android-user.html#post2265595

I am a user of AT&T and sometimes I think about switching, whether it be for possibly better service or better phones. The problem is most of my friends and family are on AT&T and therefore it's cheaper and whatnot for me to stay on it what with the free mobile-to-mobile calls on the same network.
As far as what I look for in a smartphone goes, I'm not sure as far as specifics. I just know I want cool apps with some games to play and also many options for customization (e.g. loading new UIs and whatnot). The problem with AT&T is it seems to have very few options when it comes to good Android phones.

To cut down on confusion, because I can barely tell what I'm trying to say: When I can upgrade in April (or within a couple of months after that), will there be any Android phones I should keep an eye out for on the AT&T network?

 

So it's been over a month and a half (figured I'd just use this same thread since it serves the same purpose) and I'm a little less than a month out from being able to upgrade. Since I'm with AT&T, it's likely looking to be the Inspire or the Atrix. Is there anything I should be wary of from either of these phones? I heard some things about the Atrix that might limit it from some of the reasons I want an Android phone.

In any case, these are the ones I'm looking at, but I'm not closed to other suggestions. I haven't heard if there's others that have been announced or rumored to release soon.

Thanks in advance!