Alright I currently have a single SA12 D4 on a RF 500.1 @ 2 ohms with 8 ga wire in a custom box. I'm going to upgrade to a SA12 D2 to run @ 1 ohm along with 4 ga wire. I need an amp that will be good, but not too too expensive that can push the SA12 to what it can take. I was thinking the Hifonics ZRX1500.1, good wattage and affordable. Any other ideas? Don't want too too much, don't want to blow it. Without getting into batteries or alternators and whatnot. Thanks!