I'm an AT&T customer, and I'm up for an upgrade soon. Is HSPA+ much of an upgrade? T-Mobile's HSPA+ is 6x as fast as my AT&T HSPA. A friend with T-Mobile did a speedtest and got 12mbps down, and 3 up. Is AT&T's HSPA+ as good for anyone, or even close? DId anyone see an increade from HSPA to HSPA+? I understand it's location dependent, but I'm curious if it's good for anyone.