I've only had to use it a few times but I'm glad I have it on hand when needed. I've really only used the Propane option to fuel it as I don't want any gasoline to get stagnant in between uses, but I've been impressed for how long it will run on a simple bottle of propane that I swap from my grill as needed.
We just set this up since winter will be here soon and it was easy to attach the wheels add the oil and we went ahead and added the fuel so it’s ready to go. It looks very well made and I went to many websites reading the reviews and they were great. I hope we don’t need it but if we do I’m sure this will take care of our power needs during a power failure.