i've actually had those exact kicker 12's in my hoe running on a jensen 650 watt amp in a sealed box. it actually beat pretty good for the cost. however, one did tear right on the edge of the sub in the foam. so then i went and bought two jl 12w1's running a tma 500 watt amp in a ported box and these beat soooooo much harder. Now, all i would recomend is jl. jl anything is good. but i did get kicker door speakers for the front two doors more than a year ago and the quality is so much better than stock. i also got a pioneer premier HU to tune all of my speakers and that actually helps alot, it's crazy how many different things u can tune and how much better your system will sound.