for what it worth.
I was a facilities guy for a bank and we had a 50KW Cummins put in.
The service guy told me for home say away from Generac.
He said his company loved them because they are always servicing them.
For portable he recommended Honda and for fuel Propane.Not sure if port use Propane but I do know there are no carbs(ethanol) to deal with.
I purchased a Generac XG7000E that had to have the motor replaced during the second year of warranty (73 hours at that point). Customer service was horrible and their distributor told my repair shop twice the motor was ‘in transit’ when it hadn’t even been ordered. Took two months to get it back. Now I know why most shops won’t do warranty work on this brand.