I have a kicker 10" l7 with a DB Acoustic 1200.1 Great match for power. I have to keep it turned down, or it rattles the hell outta my trunk. But turn it up for great sound.
i have 2 6 inch eD subs that i mounted in my rear deck. they are suprisingly loud for 6 inch subs, only problem is mounting them in the rear deck, ive encountered billions of rattles. when i have the bass on a regular listening level so the sound is well rounded, they sound awesome, but when i turn up the bass it rattles so much you cant even hear the bass, just feel it.