I want to use 2000 watts in my car to push a couple of subs. As much as people like sundown, i looked into their subs and i thought i could either have 2 sa12s or 4 e12s. Which would be louder? What other subs should I look at? I can probably have up to 4 12s, or maybe a few more 10s or 8s. What other subs should I consider?