iven been driving a taurus with 2 12s in a sealed box for the last 2 yrs. sounded ok but was good on the wallet. i just got a ranger super cab and wanted to build my own sub box for the back seat area. i have a audiobahn a8002t amp and was looking at the memphis m3 10. is this a good combo? as far as the box, what is better sealed or vented?, down fire or just regular? i want loud and sq, and i listen to everything, metal rap reggae jazz. what do i do?