I currently have 2 12" W7's, but I'm looking to upgrade to 2 15" RE XXX's. I would like to purchase an amp that will run my W's until I can sell them and also have the capability of running the soon to come XXX's. I have my eye on the AX3200DE US Amp, HIFONICS GOLIATH, or the T4000BD Rockford. Which is the best for the XXX subs, runs the most efficient, and can withstand the most abuse? Keep in mind I only have a little over a Grand to spend on the amp. Yes, I'm purchasing from unauthorized dealers, because I can't afford the authorized dealer prices
