All are good in some way.
As long as they're once per day and share a key with shouts, they're useless.
Bosmer's Command Animal could be a substitute for illusion magic, but it's severly limited - that's why I never use it and keep Become Ethereal under Z instead.
Night Eye is also useless in vanilla Skyrim because dungeons are way too bright.
It's abilities that I like. Resistances are a life-saver and Khajiit claws + enchanted gloves make a hand-to-hand character viable. Of course there's Argonian waterbreathing - in a game without underwater treasures
