2009 montana falling apart 1 piece at the time

I have owned 2 new keystone products that were excellent units. I bought a new Montana--Decals coming off, blew the top off of tire, a new did extensive damage to camper. I was advised to buy, all new tires-- they were 3 yrs older than camper. Molding coming loose from wall inside,some cabinet doors warped,shower parts failed int ernally.I stay on edge waiting to see what else is going to fail. Stayed in shop off and own till warranty run out. When not in use --- stored in an enclosed shelter. 2 adults and 1 sweet miniature yorkie I use cw products to keep up camper-never been abused.I need to know what is best 5th wheel.