I use a Monster power 2500 and plug both of my amps into the high current plugs (both over 300 watts @ 4 ohm) . They are on a time delay and I also wait a little bit to get the system going. So far I've not had a problem.
Other things plugged into the same unit are a cd player, external dac, Outlaw icbm, preamp, and a turntable. My sub is plugged into the same circuit but in it's own surge protector.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud