Which Familiar is the best?

Which familiar is the best? Sorry if a similar thread already exists



Pseudo Dragon- Lawful Good, Neutral Good
AC -2, 24HP, 50% magic resist, 2 attacks per round at THACO: 13 for 1-3 damage, save or be rendered unconscious for 2 turns

Ferret - Lawful Neutral
AC 0, 24HP, 50% magic resist, 75% pick pockets, 40% hide in shadows/move silently, 20% detect traps

Imp - Lawful Evil
AC 2, 18HP, 25% HP, Can cast polymorph self once per day (options include off the top of my head brown/black bears, spider, ogre, flind, wolf)

Rabbit - True Neutral
AC -4, 24HP, 75% magic resist, 50% detect traps, 30% hide in shadows/move silently

Dust Mephit - Neutral Evil
AC 6, 24HP, 10% magic resist, Can cast Glitterdust once per day and Glass Dust twice per day

Fairy Dragon - Chaotic Good
AC 4, 24HP, 32% magic resist, Can cast mirror image and Invisibility 10' radius

Cat - Chaotic Neutral
AC 0, 24HP, 50% magic resist, 99% hide in shadows/move silently

Quasit - Chaotic Evil
AC 2, 24HP, 25% magic resist, Can cast horror and blur