12 or 15? no one can tell you that but your self........ how much space do you have? do you wanna run ported or sealed. based on the sq being wanted i would go sealed... but your kinda all over the place too..... rap/ hip how has little to no sq in it.... the bl is a bridge from the Q more of a sq sub..... and the btl.. a spl monster... the bl imo sounds great on most all music... sounds great with rap and rn b Thanks for the info, I should probably be looking at a 12inch BL, which means I would have to go ported. This will be going into a dodge status