What the subject says.. I came with the idea of this thread because this is the Final Fantasy since VI that always stood out to me. VI is universally loved and there are few people who don't like it, VII while it is outdated, it is still a decent JRPG. VIII started to get a good chunk of hate during the last decade or so and that really hurt the game's reputation. IX is a cult classic and the most loved FF game by both critics and fans. XII is a generally disliked FF game even though it also has a good chunk of fans who enjoy it. XIII, XIII-2 and X-2 are universally hated so fuck 'em.
Instead of just giving "my" opinion I'll give actual numbers: It's 2nd most crtically aclaimed after FF7 and also the 2nd best seller for the francise after FF7.