I found (2) WEN 56200i 2000-Watt 79.7cc Inverter Generators for $360 each @ Woot.com & combine them with the WEN 56421 Parallel Connection Kit which provides a 30A plug. Even when I only setup one I can still use the 30A plug on the connection kit but I could also use my 15A to 30A Camco adapter....
The WENs' engine is a Yamaha clone - right down to the exact location of the dipstick - probably made in a the same Chinese shop... The electronics are oriented differently but I like how everything plugs into the ends vs. sides...