Never had any problems with my 2011 while I owned it, other than frequent regens. Haven't yet had any problems with my 2016.
I did have the usual recalls with my 2014 6.4L, and a phantom check engine light for a while, but it never caused me any issues beyond a bit of hassle.
I wish my Dad's luck with another brand was as good as mine with Ram. He might still be RVing with us, rather than completely out of the lifestyle. But that's not germane to this topic.
Everyone's got anecdotes. Friends, cousins, brothers, parents, etc. Mine with Ram are good. May not mean anything to anyone else, but it's good enough for me.