ok......lets talk abou better subs.............
Forget anything mentioned so far (sorry guys). The biggest bang for your buck is the HSL eXcursion pro - period.
The DVC is rated@600RMS, i think. This sub is mental and will kick anything mentioned so far into touch, although the Earthquake seems ok.
Like the old Shocker IIs, thi sub will bang of low power. In the right box with like 100RMS going to it, you will have bleeding nose and ears. The Zeb sell these for liek $120 for a 12dvC.
Also consider the old Shocker II series, they are quite difficult to come buy now but are quite cheap, should get an old shocker II in good condition for no more than like $140 and will scare the piss outta people. I had a shocker II 15 - sensitiviy of around 89db 1w\m and I was hitting low 140's with a RF 45.2 ( 22.5 wrms x2 at 4 ohms) in a sealed box. They bang of low power!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
No JL, MTX, any other bullsh*t will come close.