I have a single 12 inch HDC 3 subwoofer. I want to get louder. but i like the single woofer setupd. MY amp is a AQ 2200. run great. My question is what should i do? there are a few things that i want to do. What would yall rather see? Should i get another HDC3 12? should i sell it and get 2 skar 12's? Or should i buy a 15 suboowoofer with greater power handling. Like a 15" modified DC from Techforce or a BTL or a DC XL or level 5 ( when they are back) or an SP4.? so basicly. get another twelve, or go more power with a a single 15