I know they are still new but, are the I3 / I5's really going to be THAT much better than the core II duo? People say that the jump from the current (imac) 3.06 to 3.33 core II duo's really isn't worth the cost, maybe a 5% or less increase in speed. Is it worth it to wait and see if Apple puts either the I3 or I5 in the imac at its next revision?