ok so i my parents got me a pearl 8130 from sprint becuase the 8330 wasnt at sprint yet. but it has been for a while now. i dont see my parents putting in money for an upgrade to the curve, but now that im about to get a job ive been considering it. my question is, would it be smart to change form the 8130 to the 8330? i mean its probably a stupid question but just point out all differences please and thankss