Well as I have said before. Opinions are like Butt holes. Everybody has one.
Here's mine.
2 Honda's is a great set up but REALLY expensive. Honda 3000i is also a great Gen Set but again pricey. If price is no object by all means have at it. I would say the Yamaha's are comparable but still expensive.
I still have a 4KW Generac that I used for about 4 years. Paid $225.00 on craigslist. It is compact light and while not as quiet as the Honda is acceptable. My current TC has an onboard propane Onan. Plenty quiet safe and starts with the push of a button.
For what the 2 Honda set up would cost you might be able to get a take out onboard system done.
Word to the wize. Stay away from the Honeywell. It is a piece of******made in china. It may look like the Honda but it IS NOT.
Well there it is my opinion which is worth every penny of what you paid for it.