Lungbuster

This question gets asked alot and you usually get the same answer. Its all about what your wanting to do! If you just gonna street beat then any of the above would be a good choice. Just keep in mind bro your gonna have to have the electrical to support the amp that your gonna need to push this kind of equipment. Your gonna give up alot of space for a proper enclosure. Like TeamHT said 12's are going to be your better fit it sounds like. It be better to have 12's in a properly sized and tuned enclosure than say some 15's choked down. Thats just my opinion homie.

Im in no means an expert on anything car audio but I have 2 15.4 HCCA's on a US Amps MD3D. The subs are only seeing about a grand a piece and they slam. Ive got em in 10 cubes tuned to 33Hz. Ive got a RD Audio 5750 on the way but Im pretty impressed with them.