I really have only ever used either of them as a DLNA server, but I was recently forced into Jellyfin and find that I like it much better than Plex. It’s faster and more reliable on my system, and for my stripped-down needs, it’s a perfect fit. I’d say that if Jellyfin is doing the job you need, you’ve got absolutely no reason to switch.

+1 for RB

I’m completely addicted (I’m in season 90 or so); it’s my go-to when I’ve just got a few minutes for a game. I think it’s one of the best games on mobile.