I use plex a lot for my front end at the moment and without the Season/Episode number in plex it gets confused. So I usually manually fix the ones that don't have that info, but without the subtitle I have to watch a few minutes of the show to find the subtitle.
Up until a few months ago GBPVR and then NextPVR were my exclusive tv in the living room on a windows PC. However my main server is linux and my windows pc finally died after about 10 years of service. So for now it's NextPVR as the recording service on a Ubuntu VM and Plex as the front end on a Fire TV.