I have the Yamaha 2800i model and I am very happy with it. The noise is not objectionable, it has an 'eco' throttle (variable speed based on power draw) and most importantly it is an inverter genset providing very clean power. My computer and A/C love it. It's nosier than the Honda, 200 watts less output, weighs less, and far less expensive. Like the question "Which Airstream is best?", it's a personal choice. Adding a length of boat exaust tubing to the exaust does quiet the unit significantly.
BTW there are two Yamaha 2800 inverter models the difference is the 'g' model has a gfi protected plug built in.
Old trucks and old trailers . . . a comfortable combination!
A-6E All Weather Attack Driver, BUFF
USN Aircraft Maintenance Officer, Ret.
'91 Suburban R-2500 w/BBC
'78 Honda GL-1000
'72 Triumph T-100R Daytona