I purchased a nicely built 8 year coach 4 years ago. Because I did not have a maintenance history on the coach, I purchased an extended warrantee. It has more than paid for itself. I have had an air bag replaced, a slide motor control board replaced, a slide motor replaced, a double solenoid valve replaced, the HEUI pump and injectors replaced in the last 4 years. I have also spent a considerable amount of cash in upgrades. TVs, painting, etc.
That said, we love the coach and love traveling in it. We decided that we would go with an older better made coach and we are glad we did. However, you need to make sure you have enough money set aside for upgrades and repairs. It is an expensive way to travel.