My favorite in the series, but I'm weird. It's very flawed though. But I loved the characters, style, feel, and it has the greatest soundtrack in the franchise. The story is very very flawed though, but that said, show my an FF game that isn't (maybe not 6 and 9).
GF animations are a pain in the butt though.
If I were pressed to pick, FF12 wins for the best Summons. They're quickly played out, and really encapsulate that "RAW AWESOME POWER" feeling (fucking Zodiark leaves me in awe every time).
I'm actually REALLY loving the discussion here and may have to do a Game Journal on it next (well, again, maybe, those things take time and I'm too goddamn thorough with those things).