Thanks in large part to the Bethpage Library I've built a pretty solid movie library, but I have a long way to go. I'm sitting at 107 movies (825 GB) and I've tried to keep the visual quality high when compressing.
Despite being a HandBrake.app noob, I'm getting fairly solid results. The hardware encoder in my laptop is a killer time & energy saver. With my usual settings I can encode 4K Blu-ray at roughly 85fps and 1080p titles around 330fps.