So I'm about to order the Infinity 611A for my two 12" 1230's. Bad thing is - it's from Texas and I live in Canada, so shipping will take a while. Oh well, I save movey buying from there. I'll be so impatient for the next couple weeks, lol. Do you all think I will be happy with this amp? How much of a difference will I notice switching to that amp from an Infinity 310A, only giving those subs half recommended power?