I like Red Mages, but mainly for their sword and armor abilities, so I guess that is kind of cheating.

I like using blue magic in principle, but it is such a chore to learn about it in each entry the only one I ever bothered with was FF7.

So I am going to throw my lot in with the White Mages provided that a) they know holy, b) they don't have any !#$^ing cat ears on their robe.