Alright so i'll drop the Alpine,Jl, and RF. I'm now narrowed down to the Hifonics BRZ1200, or an MTX Amp off Onlinecarstereo, but not too sure what MTX one is better because there's about 6 from $150-175. However, i'm not opposed to buying one of those ebay ones you posted. The xtant 600x1 amp I...