FFIX's cast is split pretty much down the middle for me.
Zidane/Dagger/Vivi/Steiner are great.
Freya/Amarant/Quina/Eiko not so much. Freya's mostly because the game pretended she didn't exist after Cleyra and then forced her to pal around with Amarant for Disc 3. Eiko's just terrible, one of the worst playable characters in the series.
--
"Stay with me until the end. Please."
"Not until the end. Always."