Our coach is 19 years old and we have about 157,000 miles. I believe the key issue is to look at how it has been maintained and how old the systems are. We replaced the center roof AC after 14 years, the other two and the chassis AC after 16 years. Needed new muffler four years ago. As things need replacing, we just do it. Right now it is in the shop with a Cat electronic issue, but as soon as we get it back, we're heading out west to put another 5-6,000 miles on it. You're going to have issues with any coach--even a new one, but with a good emergency service plan you can go out and enjoy this great country. Get the best quality coach you can find, and thoroughly check out all systems before you buy--turn everythng on, and make sure it works. If you don't know how, have the seller show you. Good luck!