Hi Irwinsailor, Hi have heard of Onan being one of the better makes.
But the main reasonI have replied to you, I have noticed a Kohler 3.5KVA for sale
on our NZ trade-me website and it is well priced and has 5400hrs on the clock.
(Hope that links)
Now our NZ dollar is about 60cents to your diollar, so the price
to you is much cheaper. The only warning, it is more than likely a 240V set. So check that out. I can probably help out arranging freight for you at this end if it is of any interest.
All the best and Email
me privately if you want.