The other reply is right!
- I run 3 radarr: 1 for 1080p, 1 for 4k and 1 for 3d. (I share the 1080p, it's bilingual too, the 3d one is for fun)
- I run 2 sonarr: 1 for English, 1 for French (since most often the series aren't bilingual, they're one language or the other)
- I run 2 readarr: 1 for ebooks and 1 for audiobooks. (Sometimes I want the same book in audio form and in text)