let's think of what the best spells in the game are...
got them in mind well I'll tell you.
In the NES version
there is an item that castes INV2, or Invisara, which is the best item usage cast in that version, there are also items that cast Heal

IN DoS
same item casts Invisara, an item casts Sabre, an item casts Holy, an item casts Flare, an item casts Healara

basically, all the good spells are available from items in DoS, which is all I'm saying. SO magic NEVER runs out. However when magic does run out on the NES version, Red Mage is still useful, therefore making him a better character than either of the other two mages.

THE JACKEL