At lvl 70 most mges find themselves their gear, and enchants they like mostly +40 spell dmg.
BUT think for a second what if a mage enchant his gear according to his spec.
For example Frost mages will take the Soulfrost enchant, the one from X-mess event that some of the enchanters got.
Or the Fire Arcane mages will take the other one which i forgot his name.
But really dudes give your oinion suggestion and other stuff =].