without HSDPA capability you'd be on the edge network, not 3g. did you mean HSUPA (to support higher upload speeds)?
and sprint? good luck.. you should've at least gone with verizon. at least their network doesn't totally suck..
People just don't get this...Verizon is Sprint's preferred roaming partner. If a Sprint signal isn't available it automatically finds a Verizon tower. There is no charge for this roaming. The opposite is also true. It's been this way for quite some time.