I have a 2011 Fuzion 322 Touring Edition 3, although it's a little smaller then what you are looking at, I have had no big problems with the unit.
Have pulled it from south Louisiana west to Cali. across north Nevada & Utah. North to Nebraska and pretty much across the south.
Find the build to be sturdy & well built. Used it during a hurricane for several members of the family when the power was out.
If I was shopping for another TH, I would not hesitate to look into the Fuzion again.
As far as Camper World, I have never had dealings with them but I have read many, many bad reviews on service after the sale, just an FYI.
I agree with the Chevy. It's funny because I find that my Chevy is much more comfortable than the other two. I did have a Dodge and the motor was great just the ride was very hard.
I've pulled my rig from Lousiana to Cali., from Louisiana to Nebraska and all stops in between and it has preformed great. My only complaint is the fuel tank size in my 09.
But like the others have said its preference, It's what you like.
Dodge has the power BUT the single axel is so light in the rear with no load it's dangerous ( I know I wreaked my brand new one due to a fishtail). I know the dully is much better in the handling department, not sure about the ride.
The Fords are generally nice over all and ride better. I'm not sure about the newer engine models but I know a couple years ago guys talked about the engine topping off in power while driving through mountains.
BTW....Loved my Dodge but after the way the rear end just went out from under my the wife just did not feel comfortable driving it, so we made the change.