I have found that the Not so new High Power amps like PPI, Orion, Soundstream, RF, are much more powerful, reliable, better sound quality, easier to fix, ect than new powerhouses.
I had a PPI pcx2400 amp http://www.sonicelectronix.com/item_...I+PCX2400.html
and would smoke my friends competition system with 3000 watts of Rockford Fosgate power. and my system was so reliable. I could bump 24/7 until my subs popped. That amp was UNBELIEVABLE! blew 2 2200w subs with the gain below 1/4 gain and bass boost off.