You won't find many Grand Design owners in this discussion group. Winnebago has left Grand Design as a standalone division and there is little in common except ownership..
Here's a thread that discusses the top 5-er on the market and Grand Design is discussed a lot.
Good luck and happy travels,
Bill & Helen & Bella (Yorkie/Chihuahua Mix)
Last of the Chieftains, 2004 39T, W22, UP tune, Banks, Koni's, Safe-T-Plus, SMI brake
2017 Lincoln MKZ Hybrid towed 4-down, 2008 Jeep Wrangler JK