I basically want a setup where I can build these subs into the floor of my trunk - so the ridicuously heavy subs are out of the question. If thats not possible I can build the boxes for them but keep in mind i'm in a trunk of car - so if these subs need 3-4 cu ft each its out as an option. I also lean a little towards SQ more than SPL because I don't plan on being in competitions anytime soon. The amp i've chosen so far is Sundown SAZ-1500D so we're talking between 1200-1800 at a 1 ohm load, and I know that all 3 sub types can handle that kind of power. Let me know what you think - clearly budget is not that big an issue if i'm considering these subs. The way I look at it - you get what you pay for. Also I would appreciate it if you guys would give me a reason as to WHY you're choosing these subs over the other ones. 2 si mag 12s 2 DD 9100 2 Brahmas 12s