I am planning to upgrade my music system in my car. Currently I have installed Hertz DSK165 Comp in front and Hertz DCX 130. I am not satisfied with the out put from the comps;hence decided to upgrade my ICE setup to the next level. I have sorted out some of the models after doing some research. I request you friends to give a feedback on the models. Comp: Polk Db6501 Comp or Infinity Primus 6500CS 6.5 or Cerwin-Vega 6-1/2" Comp Which one will be best among these 3. Coax:Retaining the old ones Hertz DCX130 Amp decided to go for Hertz HE4.1 800W Wiring kit: Audison or Infinity Subwoofer still in confusion whether to go for an normal subor Active sub to save the rear boot space.