eatapeach

New to site and need some help with sub choice. I just bought a '08 Silverado Crew Cab with a SubThump single 12" sealed box and currently has a Kenwood KFC-W3012 in it and I am definitely not happy with it. I have a hair less than 6.75" of mounting depth and .95 air space before sub and it doesnt have any filler but could get some if need be. To power it i have a 600w Infinity Ref mono block. I also have ID CTX65 Components and a Pioneer 4200dvd deck and listen to everything....I would say rock and rap more than anything else. I am more into SQ but want something that can hit low and fast and sound great doing it. Budget wise I would like to stay under $300. So.....what do you all think would work great for me? Anything I forgot to mention?