As the title states I am looking for an amp that produces anywhere between 600-1,000 Watts RMS @ 4 ohms. This limits my choices obviously. I'm looking for either a Alpine PDX 1000.1, Alpine PDX 600.1, Arc Audio KS 300.2, Arc Audio KS 1000.1, Phoenix Gold Xenon 1200.1, Phoenix Gold Xenon 600.1...