Just pick which one you like the best and feel you get the best deal on. I would also choose the dealer you felt most comfortable with and you think will give you the best after-the-sale service.
I ended up buying my Flagstaff 90 miles down the road and saved $4000 dollars from what the Rockwood dealer locally wanted. I also really liked the sales/service staff from the Flagstaff dealer too....and have nothing but praise for any dealings I have had with them.
As far as the trailers, they come out of the same factory, but just have some different decals, colors, and interior color schemes. They are exactly the same in the components.
We discussed this here:
rockwood vs flagstaff