CDW sells for all major carriers, and they save a lot of headache. Your regular account manager wouldn't handle the wireless but can hook you up with your own wireless rep at CDW, or I can give you the name of our guy there if you want, feel free to PM me and I can send his contact info.

If you can go that route, you're better off, because you don't have to deal with your carrier for anything... warranty exchanges, etc., all that's handled by a quick e-mail to your rep. And we pay a lot less than in the stores. We don't use Insight, but I'm sure they have something similar.