Thanks for the info Jlreeves
After seeing the unit first hand, DW and I like the 315rst's floorplan as well.
We also looked at a 297rsk because of the outdoor kitchen, but decided we like the 315rst's bathroom/bedroom layout better than having an outdoor kitchen.
The 315rst has more room around the bed which will make it easier to make the bed, more storage, bathroom has a better sink and cabinet and the shower is bigger than the 297rsk.
The kitchen and living area are almost identical in both units.