How about the topper at Costco, it looks to be thicker than the two inches? Also have seen remarks as to the couch sagging after a bit. Just looked at the couch on the 2018 Passport 239ML and it actually is much better than the one they had in 2017. The thing is the Surveyor is a much nicer unit. We are still in limbo and yesterday looked at the Aerolite 2320BHSL whch is a true 4 season model, but dang, that 200MBLE is really nice. Dealers are getting pretty aggressive now as prime season is over, but such a range in prices. Also have notice, no really comparative reviews of like models vs another brand. Only thing I see are remarks, problems, and subjective stuff.
Wish there was something like there is for cameras, where you could go to the site, look at the models and get a comarison review that was unbiased and direct. Like this model uses wood frame, but still not problems and manufacturer stands solid behind, or this one has better insulation and is a true four season model.