Dont look at getting bass out of 6X9's. Yeah they will put some out, but its VERY hard on them. They were made to be a mid level sound the tweeters do the highs. Also stay away from Boston acoustics. Also stay away from anything they sell in Jc whitney. The only brands I would consider and try to stay in would be pioneer, Alpine, Mb Quart, Rockford fosgate, kicker and infinity. These are going to be your best bet (Unless you want to compete, then theres a whole new level of stuff) but these are going to be your best purchased for the buck. But again, each one makessome good and some bad. Pioneer='s Decks, Alpine=Decks and amps, Mb Quart=highs and mids, Rockford Fosgate= subs and amps, Kicker=Subs, and infinity= Highs and subs. Again dont waste the money on Crutchfields prices. There are ALOT of wholesalers on Ebay that want to push out last years items that are still new in the box, come with facotry warrentys and ya can get them for 1/2 the cost of crutchfield usually.