There are no '2G-only' T-Mobile data plans. You are free to use whatever is avaliable, whether it's GPRS, EDGE, UMTS, HSPA, HSPA+, as long as you subscribe to data.
Sorry. *First 100MB at up to 4G speedsAfter that you get throttled to 120kbps aka 2G speeds.
thats why i had to up to the next tier. :-/--I'm better than you!