I plan to run my subs at 2ohm .The Rockford Fosgate runs 1000 rms @ 2 ohm. The owner says its never been used but he had it in display in his shop he says its worth $400 and I'm getting it for $200. The Hifonics Brutus runs 1,200 rms @ 2ohm. I could get ether for the same price. What should I...