I have a 2019 37mb and it rides like a dream compared to my 2018 forest river 31 ft class C. Plenty of power for what I do but haven’t been through the Rockies yet. Had a fan belt issue,but they fixed it pretty quickly under warranty. Spartan has been great with there Sevice. Also Lazydays has been very good. I bought it at RV 1. And their Sevice hasn’t been so great. Layzydays bent over back wards to help me and I didn’t even buy it there!