Personally, I preferred Crystal Chronicles version the best. 9 is a good runner up though.

Final Fantasy 9 I think is the classic of the classic. Aside from VI I can't think off the top of my head any other game that gives them as deep a character arc / story with the whole mognet thing

Ivalice moogles do look quite different from the others, but Ivalice is just different from the rest of the series in many ways, so I think it fits. I like them a lot. I agree that 9 has the most recognizable classic design. I don't really like Crystal Chronicles as a game, but I like the moogles a lot.

I really liked XIII-2's Mog. Probably the most integral moogle to the party, and the transforming mechanic was kind of cool. I like that his pom was more of a crystal.

I don't like XII moogles either, the humanoid rabbit thing only seems not like a Moogle at first glance.