I am going opposite of what your saying, but I got a DS with the 1310 NON greasable joint, it failed, had to replace with the same. 1st one lasted less than 6 months, so far so good at about the 9month mark with this one, but I try and avoid the deep mud if I can.
I would go with a DS with a 1350 joint, it will be money saved in the long run.