I've had great luck dealing with the Jayco on warrantee repairs, so that's something I'll consider the next time I upgrade.
As far as your list, I'm looking at almost all of the same trailers. I like the Premier's, but here in WA state, the mark up on them is laughable. There's no way in Hell I would pay $30K+ for a travel trailer.
I'm going with either a Heartland Wilderness, Jayco White Hawk, or a Keystone Passport. The Passports are close to $20K around here, and I haven't priced out the Wilderness yet. Not many dealers, so I'll probably get stuck. Jayco's are like Ford trucks. They may not be "the best," but there's seemingly a dealer around every corner. That matters.