I agree with Phicinfan's and your thinking Mills. Sammy runs well for the Pats when healthy but if he is the least bit banged up the Pats always seem to play the healthiest guy. With the Pats whomever that guy is, he plays well so playing even a guy that is 80 or 90% is not a priority. Sammie can start a couple of and play well twist an ankle and not play for a couple of games. This makes Morris a great flex type starter maybe six to eight times a year but that is it and the Pats play injury info close to the vest so you may not even know when it will be his turn to shine. Sproles could be good but there is a lot of mystery on how the RB roles in SD will play out.
Jones is a solid producer and even though Choices role next year is really up in the air from what we have seen this year we know he can step into the job and play very well. He was very effective rushing on a team that was in a death spiral and against some good Ds when it was his turn to play.