Looking to upgrade to class A from C

We have anew Tiffin Allegro A ordered currently, but our big three also included Newmar and Winnebago. The Thor units looked nice inside, especially the cabinet works, but some fit and finish parts were just not correct. I must admit, that the Thor pricing was lower than the others, I wonder why?
We also are moving to a gasser A from our Jayco Greyhawk, after only two years because we love this camping/ travel thing and all the great people that we have met already!
God bless America