So far, I have had pretty wild success with the ring/necklace idea. The only down side is, because of the way I enchanted them (hurried, due to enchanting potion) when I don both ring and necklace, I lose my 42% one-handed damage. On the other hand, I can still take down a wizard, especially when they're loading me up with spells that aren't working on me, (evil laugh) and who really runs up to a dragon snout with their blade drawn? I let him duke it out with my follower and her storm atronach (they can use staves), and either my atronach or dremora lord. I might cast a bit of lightning at him now and again, but mostly I rend him and stay out of his way.
I'm convinced the single most-powerful weapon in your arsenal is ... the 'pause' button. He, who wieldeth the might pause button, can truly be prepared for everything. It doesn't matter what they throw at you, you pause, heal if needed, and take whatever potions you may need/want. Switch your necklaces and rings from whatever they may be to resist fire/shock/magic/frost/whatever, and go back in game suddenly almost invulnerable. Your opponents essentially meet "the borg" in a sense.