The Adire Audio Brahma is probably the best sub you can get to go Boom boom boom, and make your head cave in. I don't know how it is for SQ but SPL wise it is the ****.
You could always get 2 Lambda Accoustics PB12s and have really exceptional SQ and more than adequate thump to go with it. Oh yeah, I feel obliged to also tell you to buy an Alpine HU because it's just what I do
