I'm buying the Rockford Fosgate 300S amplifier for 130 including shipping from ebay. I already have my Kenwood Excelon HU installed. Now all I need is my sub/box. I was initially looking at the Infinity Kappa 100.3DVC sub but now I'm leaning towards the Pioneer TS-W255DVC (10") or maybe the 305 (12"). Any suggestions? I really would like to stay cheap(ish) on the subwoofer, I'm not trying to win any competitions or anything I just want clean sounding bass for me in the car. Well?