Dduval, I've got the Outlaw M2200's driving M80's. I've driven them hard (mostly when I first got them) up 110 db's for 45 min or more, and never a shutdown after owning them for nearly 2 years. No hum issues, and definitely cleaner output at higher volumes than the 3805. It's a great product that's within your budget.

Of course when the A1400-2 comes out....

Epic 80 / SVS PB13 Ultra
Denon 3805 / M2200 Outlaw Monos /
Sammy 55" LED