Miller and Lincoln both have welder generators. I used a Miller Legend for many years. What I loved about it was the generator cycle is at a low rpm and the weld is at a high one.
Many was the hour spent at idle making electricity for the tools while fabricating in the middle of a pasture I'd rented. I sold the Legend for fifteen hundred with about the same amount of hours on it. I'd only paid twenty two for it new about ten years earlier.
I now have a Miller Trailblazer on the truck. I'd guess the hours generating electricity and welding are about equal. After all, I fabricate which involves cutting, grinding, and welding.
Both machines have 220 volt circuits of about thirty amps and four fifteen amp 110 volt circuits.
A big advantage of the welder--generator package is the resell value retention. When it comes time to unload it you are not getting rid of a lightly used generator. You're selling a family jewel./w3tcompact/icons/laugh.gif