I've got to agree with those advising buying used. $100,000 new is not going to get you much in the way of quality or size. We were at a couple RV shows last winter. There were a lot of what we considered low end gassers in that price range. They were pretty Spartan and we thought the build quality was really poor. The couches were uncomfortable and really cheap.
I personally would look for a used DP in your price range that checks out. If you could add another $10-15K to your price range, there are some really nice units out there.