While I have no hard data to support it I have heard that Generac builds several generator brands.
I hope that they figure out how to cure this latest problem asap.
Mine has been in service since April of 2015 and the only problem was the oil sensor (Honeywell name on it) failed.
I think that has be a pretty good record.

mrvmax:I have to wonder about the profit to your contractor made any difference in his opinion.