I was looking for a system in about the same price range your talking about. I ended up with a power acostik amp, pushing 600W x 2 @2ohm 1200W max bridged, (2) Infinity reference 12's DVC 300W RMS 1200W max, and a nice box off ebay for under $400. only problem it is hard to find subs with warrenties on ebay.
These subs POUND! and have great sound quality. I've started with a dynamat trunk kit and i'm looking into peel and seal to keep it from rattlin!
