I just bought a Sunseeker 3170 DS, it is a bunk model. I spent about a year researching and shopping before I bought it. This was my 2nd class C, so I had a check list.
The main reason I chose the Sunseeker is for the fiberglass roof. My last RV had the rubber roof that had to be replaced after driving under a low hanging tree branch, about $3,000. I think the fiberglass can be repaired much more easily, and is less likely to have problems with leaking. I also like that there is no front window in the cabover, another spot that leaks seem to form. Water leakage is my biggest fear.
Some of the smaller details I like are:
The waste dump valves are enclosed, the outside storage was much better than others, there is a TV in the bunk area, the bottom bunk folds up into a couch, the placement of the cabover TV, and the over all finish on the Sunseeker was much nicer than anything in the price range. I am super happy with the 3170.
2013 Sunseeker 3170DS
1999 Jeep Wrangler