I have an ampeg BSE 115 that I have a chance to change out for a SVT 15. This change would cost me $70. I"ve read the specs and it doesn't look like there is any difference other than cosmetics. I don't think that the pretty cabinet and the "classic" logo are worth $70. I really don't go by specs though and was hoping that someone here has played on both and if there is any sound difference at all.