We owned a 2008 Monaco Dynasty, 42 ft., 4 slides, special ordering it and taking delivery in April of 2007. We drove it just shy of 70,000 miles in 7.5 yrs.. just selling it on consignment last summer (2014).
Looking back, we had extremely good luck with it NEVER having anything major with the motor or drivetrain. I did need four coolant boxes including the original. Finally, I think the last one was made properly using non-defective material.
We did have a couple of leaky windows (caulking seemed like a temp. fix) that I would probably have replaced if we had kept it. I would buy another Monaco product again. I'm not leaning towards the new style of the new Dynasty but the insides do look nice.
When we started thinking about upgrading, I first looked at the Newmar King Air (beautiful coach), then the Newell coach and finally the Prevost. Buying a Prevost is a major commitment but I wanted the robustness of the best chassis on the market with real front and rear bumpers. They do seem to be built like tanks. Our exterior is made of a Kevlar composite which gives an extremely smooth surface.
I think in 2008, Monaco started putting in flat screen TV's.
The vibration going down the road seems to loosen screws, etc. I had to tighten my shower apparatus every couple of months.
Good luck on your search,
MM.