Our budget isn't as rich as yours, but we're doing the same sort of thing. We have budgeted $10,000 for initial repairs and upgrades that we will want, and we haven't even decided on the class
of RV yet, much less a brand!
One brand that hasn't been mentioned here is the Bluebird Wanderlodge. Randy Dupre is a broker for them. Go to his site Blue Bird Wanderlodge and Motor Coach Brokering Service
and check them out. While the Wanderlodges themselves are no longer made, Bluebird is still very much in business. Their owners group is at Wanderlodge Owners Group - Powered by vBulletin
and they are very friendly.