I love the gcon and ive come to love the incriminator lethal injection. the only thing im havin problems with are shipping costs. im trying not to blow the bank on the subs cause im making a custom ported box and buying a amp. Anybody like the lethal injections? i know the gcons are very solid as well as the sundown SA-12. Plus with the sundown i get free shipping.. sadly i dont have the power for the FI. I want a good starting point for upgrading from one level on my system to another you know? like i just wanna take it a step at a time and get everything exactly how i want it. Im an extremely competitive person so im always tempted to get the loudest and best. But im thinking the hardest hitting while still keeping SQ. so a good SPL and SQ mix. I have friends with 2 kicker 15's or 12's and some guys with JL's and some guys with RF's i wanna blow them out of the water while still keeping the sound quality high. SSA, Sundown, and Incriminator all have what i want but i just want some opinions on these. so far everyone has screamed SSA so right now they are at the top but what about the incriminator LI and the sundown SA? Not sure what Fi driver you were looking at, but in any case there isn't such thing as underpowering. What ever power you were planning on using for a gcon or sa12 could very well power the Fi driver. Don't expect a pair of 12s to perform magic and beat the cone area advantage that a pair of 15s have. At the same time you should note that installation will play the largest role in the end result--whether your goals be sq or spl.