Im probably gonna get rid of the system I have now, its pretty cheap stuff, and not very loud. Its 2 RF Punch Z subs and a RF 2200s amp. Im thinking of getting 1 Kicker 15" L7 Solobaric, with probably a Kicker KX1200.1. I know this would be a great improvement, what do you all think? Is that amp good, or can somebody reccomend a better one for that sub? Also, what are the differences between the 2 ohm and 4 ohm solobarics? Which should I get? I was thinking of using the box that Kicker sells, just for the solo 15. Would that be decent? Thanks for the help, Im new at this stuff, this will just be my second system ever.