JBL GTO 1204bp-d and kicker dual 12" CVR comparison?

ACTUALLY, the other guy is COMPLETELY WRONG. Loudness is measured by the sensitivity of the sub! The JBL sub has a dB sensitivity of 90dB, while the kickers only have 87dB. The rule is, for every 3dB of sensitivity you go up, the sub will be TWICE as loud using the same exact wattage! Even crutchfield.com proves this fact. So please, go with the JBLS. kicker is a low quality brand.