StLoony posted...It depends on how you define worth.
Suggestion: Play with whatever familiars you feel like using because you want to and for no other reason. If your combination doesn't work out, try something else.
This. The game is so much less fun if you focus too much on stats and which familiars are "the best". Just get the ones you like and roll with it. If you want another Mite, it's worth it to catch one.