DarthScabrous :
And when I switch to ATT, I should be able to pick up HSPA+, right? The only version they have is the i9300. Quad core, but only 1gb ram. Not a horrible switchoff, at least I don't think so.
Yes, you should be able to get HSPA+ signal on AT&T with the i9300 if there is HSPA+ coverage in your area, as long as the phone supports 1900 MHz band (PCS), which applies to AT&T, T-Mobile, and international versions of Galaxy S3, and the Galaxy S4. Also the Nexus 4 as well. If you want LTE from AT&T though, with the i9300, no. The i9300 will not support LTE. Only if you get the US editions of Galaxy S3 and Galaxy S4, such as the AT&T and T-Mobile's edition, they will support LTE on AT&T. HSPA+ is fine in my own opinion, but I just want you to know the details. Hope this helps.