Samsung Infuse 4G or HTC Inspire 4G?

I'm getting a new phone this Friday and I'm not sure what I should get. I'm stuck on AT&T so my choices are limited to the Infuse, the Inspire, and possible the Atrix if it's bootloader gets hacked soon.

Mostly I'm going to use my phone for texting, browsing the web, listening to music, and watching videos. I want to do some app development too but I doubt I'll get that into it, so that's not a huge factor to me. I'm hoping I'll be able to have the battery last at least 18 hours with light-moderate use.

This is my first smartphone and both of these seem kind of even to me right now so I'm not sure which to get. I plan on trying out a bunch of different ROMs, and right now the Inspire seems like the better option for that, but the Infuse did just come out so hopefully it'll get some soon. Can anyone share any opinions about either of these?