rockfords have gone down and i also dont like them cause bb has them, but anyway i have 2 infinity kappa perfect 12" and they sound real nice, and talking to some people who have tried more subs say they like the kappas the best. JL is good also, personally i think i would go with whichever between JL and Infinity was cheapest, because both are gonna sound good, and after getting a $3,000 system in my truck...I kinda want to get some other things instead now.