We just finished 11k miles in our 2000 Dynasty. We did have some issues the first couple of years with engine sensors. It had sat for 3 years. It has still cost less than a warranty would have cost.
One thing no one has mentioned. Regardless of your diligence, you will find that your how you think you will use your MH will be a bit different than how you want to use it. It is why people trade in their MH. Buy your last MH first if you can, but be prepared to either make do or trade. With that in mind you can fix most things but you can't make it bigger. Buy more room, floor space, size than you think you need.