but you have to understand neither of those will give you bass so loud you cant listen to it, also you cant really have SQ and SPL thats kind of like having an angelic devil?

You want bass so loud it literally hurts be prepared to spend well over 500 per sub and oh god... i dont even wanna think of how much for an amp, but look for something around or over 3000RMS then get 2 of them just to make sure... So in other words you had better have one hell of a bank account, oh and while you are at it get a hatch back go buy 500 dollars worth of MDF and build a wall in it.. then youd be starting to get close to painful bass....