Two new handsets have landed on T-Mobile U.S. for the heavy-duty texters out there: the Gravity 2 and the Comeback, both from Samsung. Both support 3G, have full QWERTY keypads and 2 megapixel cameras. Form factors aside, these two have very few differences, yet the price points considerably different – the Gravity 2 is only $15 on a two-year plan, yet the Comeback is $150. Is having a dual-swivel form factor and a second screen really worth that much more? Apparently it is. In any case, the devices aren’t much of a surprise since the release was preempted by the Gravity 2 passing through the FCC and pics of the Comeback leaking not long ago. You will eventually be able to pick either one up at the T-Mobile online store.