Need opinions. I need a setup that I will not get tired of for a while. Looking for mainly SQ but a little loudness wouldnt hurt. For amp, I have a PPI Art A600, PPI Sedona 500ix, and US Amps US-100HC. For subwoofer, I can get or already have a JBL W12GTi, AA Avalanche 12, a 15" PPI Flat Piston PRO, or two 10" PPI Flat Piston PROs. Which combo do you guys think will work the best and why do you think so. Thanks in advance.