being that I carry a Dash........... sell sprint and cingular......... should give you a clue. it is a great phone as well as any other HTC products(Moto Q, black jack, 6700, MDA, ect).
If I were to do it over again however i would have dumped T-mobile a hell of alot sooner. My sidekick 2 got fried 6 times(all of which were electrical and programing issue when it would just cook itself well siting in my pocket) never seen such a piece.
Black berrys are eh... less I was carrying nextel there are better products on the market. they are over hyped and over priced. I would much rather have another PDA than that.
whatever you choose Treo's are junk. I wont sell them to customers less the are adament about having one or are a real estate adgent.......
get a Windows mobile phone........
havent gotten to check out the new "wing" from Tmobile but basicly is a MDA with a 2.0MP camera.
check out phonescoop.com for some sweet info as well as new stuff to come.