So which game had the Moogles appear the best in your opinion? I think they looked the most iconic in Final Fantasy IX. They look a lot like the ones from the older games. They come in slightly varied colors and fur patterns too in that game.
The ones in Final Fantasy XII look like anthropomorphic rabbits which I don't think makes much sense for a Moogle. Final Fantasy Tactics Advance and Tactics A2 have them look a little awkward as well.
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