For the entire game, my materia system has been as such:

Equip current party with best materia.

Leave all other characters' materia empty.

Needless to say, this occasionally caused problems. Now, at the end of the game, the party's going to split up, and I want to distribute my materia well among the characters. I don't have any super-high strength materia, but I would be interested in hearing materia-distributing methods and tips. Any advice?