Generac makes a number of generators including whole house generators which are usually propane or NG. Seem to be good quality and last a while. I left them out of my opinion just because i have not used one, take Izzy's advice on that.

As far as the china generators i don't know what to tell you, i have not used one, and i don't know anyone with one. If there is a place close enough that you can stop by for a visit and check it out, might be worth a trip.