Just bought a 415, only issue so far was the wiring in the circuit breaker. The generator should power everything. But wasn't powering the 2 ac units. Or 1 ac and microwave. Heartland wasn't very helpful. One guy even said oh no with the 5500 onan you can only run 1 ac. Lol. But after looking at the panel I realized they had put the circuit breaker for both ac's front and back, fridge, and microwave all on same side in the breaker box over loading one circuit. So I switched out the breakers to balance to load to both side now I can power everything. Nice so far no major complaints. Little things I fix or touch up myself. One thing I don't like is what is labeled as 2 grey tanks and 1 black is actually, 2 black and one grey bc the rear bathroom flows in to rear as labeled grey tank.