[CoMaddMax]

Welcome to the forum! I too have a Duramax with the Allison and love it. I have been pulling a 15K lbs. 43’ Spartan toy hauler for the last 7 years. I’m getting ready to down size, and looking at several makes of 5ers. Here is my list, there will be others that like other brands so you have a lot of decisions ahead. DRV, Vanleigh BEACON, Heartland Landmark, Grand Design Solitude and Redwood. Look at RV Trader to get an idea of the model you want and the price you will pay. If want to look at new, Brinkley is a one to look at. Happy hunting!