The BEST option, if you have a gas line, is to have one hard wired to your house. They advertise them at Home Despot.

I picked up a Champion 35Kw job at Cabela's on sale for $400 which is a steal compared to what Honda and Yami ask for their comparable Gens.

Only trouble Ive had was the cheap schitty plastic ON switch snapped off but that meant only a 50 cent part and some solder.