Dare I say it - but the Behringer Europower EP series of power amps are darn good IMO. There's been one at a rehearsal room we sometimes use- frequented by HEAVY/LOUD bands & it gets ABUSED!!!!!!! Big time... I know the owner & he's had it for 5 yrs nearly & it's never missd a beat!! I also know of other EP pwr amps that do the hire job well & same story- all've worked well!!
behr poweramps are definetly their wheelhouse... they have loud fans but who cares when your using them. I would just suggest shying away from a pre/power setup. I've been gigging with one for a few months now and i wish i still had my old amp head... oh well!