Generators - Gas, Diesel or Propane, Best makes models?

I wouldn't let fuel gumup sway my decision. If I had a mounted generator, I would go LP because its already on board. I have a Honda 3000 is EU and love it. I only use it once or twice a year and never have had gumming issues. The day I bought it, I went to the local airport and filled it with Av-Gas. It has seen nothing else as my dealer sets them up with it. The thing about Av-Gas is there is no corn fuel in it and it never goes bad. I've found it for about $1 more per gallon than super!