welcome to the forum.
I prefer the Onan Propane generator (over gasoline in my rig) because I don't go through a lot of propane and this allows me to go further between fill-ups on a tank of Gasoline fuel. If the MH you buy is Diesel and you think you will go through a lot of propane (cooking and heater cold climate areas) by all means go with the Diesel gen, the diesel gen puts out a little more watts than the propane also.
Dale & Terri, Lulu & Tiki (our Chihuahua's), New rescue puppy Prince - Pom/Pug mix.
2013 Tundra, Double Cab, 5.7, TRD Off-Road, 4X4, Full Tow Package
2013 Wildwood T26TBSS - Sold
2000 Gulf Stream Sun Voyager M-8357 MH, Ford Trident V10 Gasser, 35 foot.