As the size and consequently price increase, the factory option of a 'generator prep' is more apt to be found. The 'gen prep' option is an enclosed space in the basement that has the wiring installed for a generator to hook up to. It also has a 'transfer switch' already in place that automatically senses whether the power is coming from a power pedestal or the generator. It usually includes a remote start button inside the fiver.
When we traded our '05 Suites in on the '15, the gen had 325 hours on it, and we had it transferred into the newer '15. 10 years/325 hours = 32.5 hours/year. Not a lot, but invaluable when we needed it. Allowed us to stay in Forest Service CGs when we wanted to.
It takes a lot of space out of the basement storage area, keep that in mind.
Welcome to the forum.
2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired