The genny in my folks camper is an older honda unit like this one. I'm not sure if its the exact model number. I must take it out and see if it runs. All I remember about it also runs pretty quiet and it's bloody heavy.
My dad told me a story about a friend of his that had the exact same genny. They were wildcamping some place over by tarbert one night, watching telly, enjoying their evening when the lights & telly went off. He figured it had run out of petrol... but sure as you've guessed, when he went outside, he saw his genset being thrown into the back of a van and away off down the road...
Whatever genset you buy, make sure you buy a heavy lock and cable!!!