Just a FYI on these new style gens. They are designed to be stacked one on top of the other, when used in parallel. However this new parallel kit will not be available until January 2019. For those needing to parallel right now, you can use previous model kit, but will have to set one gen beside the other.
I won't be starting mine until Spring, unless for an emergency, but in looking it over, pretty impressed with the quality and features. Also a 3 yr warranty, so no worries leaving it sit unused for a while. Champion tech guy told me that each is run at the factory, before boxed for shipment.
Jerry