Yeah, New Voice is one of the best Mage armors you can get. While it doesn't have the highest defense, the regen is very helpful, and its combination of endurance and damage is perfect for mages. If you do want high defense, the Machine Rug Set is also a great choice. It has the same great mix of damage (except to all damage types), with a little more than New Voice, and has the highest defense of a complete set (like Romo and Forgotten Life). It's main disadvantage is the fact that it doesn't have regen, but you can always mix both if you wish.