Which system do you prefer? One where you get to outfit your characters in a full set of armor (I, II, III, IV, V, VI, IX, XII) or where it is limited to weapons and accessories but comes with an upgrade/customization system (VII, VIII, X, and XIII)?

Personally I prefer the old school system that made a return in IX and XII. You could mix and match armor set pieces to customize the stat bonuses on your characters. I thought it was especially well done in XII--where you have a choice of a wide array of weapons, armor, and accessories that all have their own properties, disadvantages/advantages. For instance, katanas were good for characters with a high magic stat because their attack power is based off magic instead of strength.

The other system has seen a variety of customization systems with X probably being the most notable. So, I can see why people would like to just have the selection of weapons and armor to be narrower yet provide a customization system instead of variety.