This shield type is the strongest and can gradually repair itself. If it runs out of durability before it can recharge though, it will still break. Oh well. It's only appearance is in skyward sword.
This shield has a higher durability than that of the sacred shield and takes an insane beating. It shares the ability to repair itself with its former version. This shield might seem amazing, but at that point in the game the enemies do more damage, so it might not really matter.
This shield is the most durable form of sacred shield. This baby will last crazy long, so it's almost the best shield in the game. Almost.