I have a Champion - non-inverter, it's a great little generator and I haven't had a lick of problems with it. Key to having these start back up is to drain the fuel out of the carb appropriately if you're going to let them sit for a while.
I did notice in this chart that the Westinghouse, for 100 more running watts, consumers 30% more fuel.
http://primereviews.org/best-portabl...-the-quietest/