I cannot speak to Grand Design. However, I would suggest you do your homework about customer satisfaction, or lack thereof, of the
Dutchmen brand. You might want to Google the owners group forums.
I have had several issues with my Dutchmen Denali 5r, and IMHO the customer service with Dutchmen has been less than satisfactory. It should be noted that the management of Keystone has recently taken over the customer service component of Dutchmen, some folks think that is a good thing, but it has not been much of a help to me.
Sorry to be negative, but I feel compelled to suggest you check out the Dutchmen product carefully. Whatever you do, enjoy your purchase!