I recently purchased (ordered) a 2018 R-Pod 178. My out-the-door price was $14,750. I researched for nearly a year before deciding on what/where to buy. My local (Virginia) dealers were not willing to do much negotiating so I went online in search of a better deal. What I found was R-pods in Ohio, Indiana, and eastern Iowa were by far the most reasonably priced.
Once I decided I was ready to pull the trigger, I began contacting several dealers, first by their "Internet Quote" buttons and then via telephone. I was able to get my best deal by letting them know what I was being offered and I had two dealers come way down in price. The dealer I ultimately purchased from is in Indiana. He wanted my business and was able to arrive at a price we were both comfortable with.
Insofar as providing any advice on the two models...well I am not in a position to do that as I am still awaiting delivery of mine. However, I would definitely give much thought to those on this forum that are experienced Podders. They are a wealth of knowledge!
Good luck with your search and I hope you are able to find what you are looking for!!