In which way did each of the Final Fantasies you have played stand out for you?

IV-The colourful characters and awesome story, especially for such an old game
V-Job system
VI-The music, also interesting characters
VII-Midgar and the darkness of this world
VIII-eh? liked the final dungeon
IX-Lovely world with great cities
X-the levelling system
XII-Massive world!
XIII-the comraderie that slowly develops between the characters. They are not just some people traveling together, but start to genuinely care for each other

Tactics-what's not to love?