My 27” 2TB iMac has been running Sierra just fine when purchased new in July of 2017.
Just thinking out loud if now would be a good time to upgrade the OS to Mojave.
More importantly is the flow for LR Classic and PS? No issues etc.
As we have a few unexpected power failures in my neighborhood, I invest my time in driving 25 minutes tonmy local Apple Store and having all of my OS upgrades done there. Everything is checkout working and on my way home.
Last month I did add 16 GB of RAM for a total of 24 GB RAM.
Any new additional features in this OS or “ if it ain’t broke..... don't fix it”.
Thank you.

