I don't think this is what they specialize in, and although I did not like any of the floorplans you might find them very good for you, it's personal. When you go to sell it, ( and you will ) a Winnebago product will do a whole lot better for you..
The Mercedes chassis is great, you can't go wrong there. Make sure your bed is comfortable.. Believe it or not, my wife and I love the comfort of the air bed in the 24 M in our Navion but we do put a foam topper on it too.
There is high demand for Mercedes right now. Make sure you can trust the people selling it to you, - get a fair price. I got a great deal on mine, once I found the right salesmen - you don't have to buy local, it was worth it to fly to get mine.