I'd roll with a JL Audio sub. Fosgates are decent but you have to buy the upper end if you want to have a clear sound. JL audio not JBL....JBL's are good home theater speakers, but there are better car speakers out there. You can also check out the Eclipse sub or the silver Alpine sub. I'd stay away from Pioneer and even Infiniti for Subs. JL is a better quality subwoofer.