The wife and I went to the Tacoma RV show, they had allot of TC's outside, we were surprised at the amount of room they had in them.
We as with you didn't look at many Class C or Class A's but we did look at 5th wheels, did not see ant Grand designs but fell in love with a Kz G384RLT Durango Gold which looking at some picture post here looks allot like the Grand Design ...
I am getting to believe that all the MFG now have somewhat the same design features, the sofa's, stoves, light fixtures, shower's, cabinets pretty much look the same except for minor changes.....
Had we seen a Grand Design, maybe we would have thought about buy such, compared the two between price and workmanship, layout and dealer availability in what we wanted.... We may in the future regret our discussion to buy a KZ brand but only time will tell. I believe it's more in what your dealer provides in service and how well they support you in warranty work if needed than if a brand is good or bad .....