Alright I'm new to the audio scene, so I come to the pro's with some questions. I heard that the Shivas 12" are the best thump for the buck, but I would like to get something more powerful, something in the 600rms range, any suggestions? I plan on running a sealed box with 2 12" subs with something in the 600rms range each powered by one mono amp in the 1000rms range. I need some info on which brand and what setup(sub & amp) would work best for SQ? Thanks.