Monaco is a highly regarded name as far as motorhomes. But as pianotuna elated to, they all have or can have issues. My in laws had a Monaco Dynasty. Paid big bucks for it. It had to go to the shop several times. The problem is that the shop (dealer), was over 4 hours away. The problem with higher dollar motorhomes is that they can often have higher dollar problems. Most RV's are built similar. There are a few different ways. Some that do it better, charge more. As far as mechanically sound, they use the same brands. Dometic, Atwood, suburban, etc...there are different levels of products within those brands. The main thing is too make sure it has been cared for. Check for leaks. Class C's are the most succeptable RV to get leaks. If the seals are kept in good shape, then it should be good.
Bordercollie mentioned 5000 miles average. You can't really go on that. People camp differently. Just like people drive differently. Car dealerships say that 12,000 miles is about average for a car driver. I drive double that. There are people that drive half of it. We've had our motorhome for going on 2 years. We are now just pushing 5000 miles on it. It had a few hundred on it when we bought it.
