I have a late 2015 MBPr with El Capitan (which I have been satisfied with). I have been considering upgrading to Sierra, but looking at the threads being posted, there seems to be quite a bit of issues and concerns stated. Since this is just a personal use laptop with some photography work, should I upgrade or just continue to wait until the bugs and nuances are ironed out? From what I am seeing, Apple does not seem to be too excited about resolving concerns being expressed, or am I just not seeing the big picture?