Check into the Champion 3100 inverter generator on Overstock.com @ $849.  From what I can tell, it's a fantastic generator--comparable to the Yamaha and Honda 3000 watt units.  Some of the big online generator sellers are also starting to sell them--1/2 the cost of Y and H.
The company is very customer oriented and carries a full supply of parts--even if they're a Far East company.  Their customers rant positive things about the generators and the company online.
FYI:  You'll just find inverter generators to be 110 volt.  Sometimes they put out two 110 volt outputs.  For RV use, 220 generators are not used.