My first choice would be the Winnie/Itasca models. Second would be the Solera, and then the Prism. Since there isn't a WGO dealer (other than the class B place) near me, I'd almost definitely wind up with a Solera.
The Prism has a rubber roof, while the others have fiberglass for a roof and fiberglass end caps on the front and rear, to help guard against the dreaded and value-destroying cabover leak (and the rotted wood.)
I'm leery of rubber roofs, maybe it is unfounded, but even though they have good warranties, usually they have seams on the top of the rig that are sealed by caulk which rots/cracks in 1-2 years. The roof warranty doesn't cover the caulking. On the other hand, some fiberglass roofs I've seen actually wrap around the top a few inches, so making sure every inch of seam is well-caulked is less of an issue.
