If you want brute power any B&K amp will work well. They sound pretty good too. The topology of their amps are all very similar. Pick channels needed and wattage desired. Resale is awful so you can pick up a lot of amp in the used market.
http://www.audiogon.com/cgi-bin/cls.pl?ampsmult&1224558009&/B-K-Reference-200.7-black;-200
http://www.audiogon.com/cgi-bin/cls.pl?ampsmult&1224558009&/B-K-Reference-200.7-black;-200