I just came from two 12" kicker l7's and wanted to upgrade, so after some research (and a very biased box builders opinions) I came to the conclusion that Digital Designs were the way to go. I have about 500ish to put towards some good used equipment. I was thinking maybe one 3512, and maybe for the amp just go for audioque or something, but I could be convinced otherwise. The guy building my box has already started I believe so it has to be a 12" sub. Offer up!