I had a 2010 E350 Super Duty on a 28’ class C chassis with 17k miles on it. I spent a fair amount of money on it to get a ride and handling cigar close to my current Chevy 4500 on a 29’ chassis with 40k miles on it. For you younger folks the praise I mention is “Close but no cigar.”
The ride and handling in winds are way better on the stock Chevy chassis that is 29’. The stock Chevy 6.0 with the six speed transmission in tow/haul shifts better on hills that the V10 in tow/haul with the $500 “5Star” upgrade when cruise control is on. The Chevy also gets up to speed quicker when entering an expressway even going uphill. I have that situation here.
I look forward to climbing real hills out west just to see how bad the V8 performs.
For full disclosure here I am a lifelong Ford guy. My Dad had Fords. I have had Fords till very recently. But things change.
My new to me Leprechaun 290 QB can be had used with a cab over queen bed. I really wanted one of those. It would sleep six. But the head is in the back bedroom. My last rig. A 2011 Four winds Chateau 28A with no slides could do six no problem with no slides. No slides are cheaper to buy.
Hope any of this helps.