We have a 2018 29RS that has worked well for the retirement Alaska trip, winter to Arizona, and a lot of Michigan camping. We’ve done a lot of mods so stay with what we have or upgrade? Desirables would be 33’ or so, under 15,000 GVWR and 2,600 hitch weight to fit my 2020 Duramax, east west bedroom slide with king bed, and at least as good as quality as Grand Design. Any Grand Design or other manufacturer models recommendations?