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.