We originally considered a 321RSTS but eventually went with the 317RLOK because of the TV layout being on the opposite side of the stove/fridge. My wife likes to be able to see the TV when she's in there and it's difficult if it's on the same side. Its also got an outdoor "kitchen" thats really nice when you want to just hang out outside and still cook and enjoy TV etc.
Regarding options, we went the whole way, 2 awnings, backup cam, 2 ACs, 3 TVs, Maxxis tires. It being only the 2 of us we went with the standard 8cuft fridge. We did change out our base lippert pinbox to a Reese Elite Airborne and a B&W Companion hitch. We have a Dodge 3500 with a short bed and its really nice because I can make virtually 90 degree turns with it and not even a chance of it getting near to my cab.
2016 Ram 3500 Lonestar, CC, 4X4, 6.7 CTD, AISIN, 3.43, B&W Companion RVK3600 (Ram puck drop in) with Reese Elite 5th Airborne Sidewinder.