I completed the College of Winterhold quests to become the archmage, and in doing so recovered two super awesome items; The Staff of Magnus and the mask Morokei. Stats for each are below.
Staff of Magnus - Absorb 20 magicka per second. If the target is out of magicka, absorb health instead. Note that the magicka is absorbed into the staff itself, not given to the user.
Morokei - Magicka regenerates 100% faster:
The Staff makes one hell of an excellent weapon especially against the creatures that are nearly impossible beat (i.e., giants, dragons, extremely leveled up opponents). The mask I've debated disenchanting and destroying to add it's enchantment to my list but it's such a badass looking mask I can't bear to part with it. Stupid move on my part as I could enchant something else with the same effect and then I could wear a helmet too, but I just love that mask.
I stumbled upon Krosis after killing a Dragon up on a mountain top at a VERY low level...maybe 10th. I typically would save right before fighting a Dragon at my lower levels and since Krosis killed me a few times with them Fireballs, that save allowed me to keep trying (I wanted the shout from the wall he was guarding)..
Anyways, I have been sporting that Mask since roughly 10th level and I am now level 42! I am sure there are better out there but I don't really care about Armor Rating...I make my own healing potions and have some wicked damage from my weapons, Bow being one of them :)
It's the final armor you get from the thieves guild. Here's a picture if you're interested
http://images1.wikia.nocookie.net/__cb20111119202546/elderscrolls/i...
I think Dawnbreaker is my favourite item to date, it looks the business and mauls up the undead really bad once you juice it up on ebony ingots.
Then theres the ebony blade which has a very unusual little script tied to it, very creative piece of work by bethesda that, can really currupt the allignment of your character weilding that weapon.
They should create a similer script for Umbra if they bring it back in DLC.
Weapon Favs: Dual Wielding (Left) Chillrend and (Right) Glass Battleaxe of the Blaze / Nightingale Bow
Armor Favs: Thieves Guild Armor / Nightingale Boots & Gloves / Krosis Mask
Jewelry Favs: The Gauldur Amulet / Ring of Eminent Sneaking
The reason why these are my current favs is because I have been sporting them the majority of my game play. Haven't found much other equipment I like more yet...
Shrouded gloves. 15x damage from stealth with daggers: lvl 60 sneak and 5 perks min. 2x damage on top of that for a total of 30x: priceless.
Nightingale armor too, god it was awesome when I got that. Pity the dark brotherhood armor is more useful. The nightingale armor currently adorns a mannequin in my mansion :p and it still has eyes under the hood, strangely enough.
Love the Nightingale Armor! I have it on at all times! Though I wish I could switch the enchantment from the hood to the one from the Dark Brotherhood, the additional bow damage is much more useful to me than some illusion magic buff! But still increadibly awesome looking!