I'd be interested in a comparison with other "quiet" manufacturer's products. Yamaha purportedly manufactures the quietest generators, operating in the mid-50 decibel range. But a real world comparison with the same load and distance ranges, same backgrounds and the full line of sizes might be an eye (or ear) opener.
I'm surprised that Consumer Reports hasn't conducted such a test. It would be a welcome addition to the FGRV archives since there appears to be an ongoing interest in the subject.
Kurt & Ann K.