Vampire Lord. You can keep your werewolf smacking attacks and howling like a lost puppy. I can float on water, toss giants off of cliffs like they weigh as much as a sweet roll, summon a powerful Gargoyle (got a mod that makes this even more effective, too), AND I don't need some Daedric friendship ring to use my power more than once a day. Spec into light armor and enchanting (full set of light armor raises stamina regen rate by 50%, stacks with your enchantments), place double enchantments on all your shit to up health/magicka/stamina regen in sunlight, and also max out fire resistance. I'm sitting at a flat 70% resist fire with enchantments. I have no weakness and no limits.