I personally think the Archmage robes look as if they belong on a hunter/gatherer. (They totally look like leather) But they are so good that I cant afford to use a robe that looks like what you'd find a mage in.
But I agree, Unenchanted Thalmor robes would be amazing...if only Enchanting could make robes 1/4 as good as the robes you find on people.