There’s a Play version action if a movie has multiple files linked to it. The dialog will however only show a small set of information – mostly about the video quality (resolution and bitrate).
There’s also a feature suggestion to expand that… but currently it won’t be sufficient to pick between different editions/cuts (unless your users check out the technical details of each file beforehand).
You can filter your library by duplicates… this can be useful to identify movies for which you have different quality versions. Sometimes Plex will accidentally merge files and treat them as the same movie if your naming is a bit (too far) off.
https://support.plex.tv/articles/202393718-how-do-i-find-duplicate-or-merged-content/
