I just purchased my SPL Z1X300D mono amp, and now I'm looking at picking up a pair of SPLW-15's. My only problem is that I can not find any reviews on the sub. is this sub good for everyday booming or just burping and compition? I plan on installing it in my everday driver. If these sub are poor, what subs would you recomend and please try to give me an unbias reason..