I keep my movies on a NAS. The setup for Infuse is simple and straight forward.
My favorite feature is that it keeps all my devices in sync. I can watch on my Mac, immediately pick up on my iPhone, and continue on any AppleTV in the house.
Protip: if you’re having sync issues between devices, make sure all their versions match.
I wish I could edit the granular details of the metadata within the app, but I’m content without that.