I got a 01 Grand Cherokee with the infinity gold speakers. I'm ordering a Brahma 15" and a Hifonics bx1000d for my subwoofer. i got a new sweet headunit allready and now im thinking of changing my component speakers. should i leave them, or change them with some relly nice brand speakers. if so what kind should i get, JL's or kappas or whatever? Any help, Thanks