The best subs I have ever had were called American Bass. Ya, I know the name sounds corny, but Ive had JL, Kicker, Rockford Fosgate, Pioneer, and a few others. These were the best out of all of them. I had a Kicker KX1200.1 running two 12's and it would bounce the windshield wipers off of my windshield (also cracked my windshield 4"). Check em out, they are on the net.