I was looking at a rotel amp (can't remember the model no.) but it was a 6 channel amp that could be biamped into a 3 channel amp providing more then enough power to drive anything (within reason).
Also the 5 channel amp by Rotel reviewed on this site is another choice if you are maybe thinking about the idea of powering all 5 channels.....
But seriously, Rotel in my opinion, make the best amps for the money you can buy.