As a generalization, Winnies are usually considered superior to Forest River products. That said, either can be either good or bad on any individual unit.
Look at both carefully, look for fit of cabinetry, materials used, plywood vs particle board, hardwood vs plywood etc, then decide.
Generally freestanding furnishings are better than built in. Appliances will likely be comparable. Depending on how you intend to camp, tank sizes may become important.
If you are looking at new, you may want to compare warranties.
Happy hunting
