So, playing through Skyrim, I've reached the point where I can become a werewolf, or a vampire. And I'm not sure if I want either of them.
For becoming a vampire, it seems like the pros and cons are pretty obvious. Weakness to sunlight, and hostile NPCs, but getting bonuses to various attributes, and some extra spells. I probably won't go for it this playthrough.
Werewolf, though, seems less obvious. I can turn into a beast once a day, during which I unequip my gear, but kick ass with claws and fangs. Are there any other advantages/disadvantages to becoming a werewolf?
If you have the dawnguard expansion, then becoming a vampire lord will -not- make npcs hostile towards you, even if you are in stage-4 of hunger (aka blood-starved vampire, which grants additional powers). You can feed on sleeping npcs (make sure to sneak, as getting caught feeding is a crime) to control your level of blood hunger. The more hungry you are, the more powerful your vampire powers, but also the stronger your weaknesses are.
Becoming a vampire lord also gives you a bonus to sneak, a bonus to illusion magic, turn invisible once a day spell (if you're at stage 3) and a calm human once a day spell (if you're at stage 4.) It also gives you a 20-30-40-50% resistance to cold and a 20-30-40-50% weakness to fire. In vampire lord form, you can drain the life from victims to gain vampire lord perks, which is kinda like free skillperks that only work in that form. They allow you to detect life, turn your claws poisonous, summon attacking bats that heal you, summon gargoyles, and so on. You also gain a 100% immunity to poisons. Life, magicka and stamina have their regeneration reduced 100% in sunlight, but this can be overcome with enchantments that boost regen, as well as using the Lady stone which grants you increased life and stamina regeneration. Maximum life, magicka and stamina are also reduced in sunlight.
Werewolf is a little more straight forward. Once a day you can turn into an awesome killing machine. Only do this in bandit camps, dungeons, etc, because anything that sees you transform will FREAK THE FUCK OUT. You have a limited time as a werewolf, but you can consume the hearts of those you kill (just stand over them and press E to feed) to extend the time of your transformation. Feeding from the dead also heals you, as well as builds progress to werewolf specific perks, most of which have to do with life regaining and more claw damage. Outside of beast form, you gain a 100% immunity to disease (which also makes you immune to vampirism) and cannot gain the "well-rested" benefit from sleeping (your beast blood keeps you from a restful sleep).
If you go to Falkreath, there is a man in the prison there that is accused of being a monster. If you talk to him, you get the Ill Met By Moonlight quest which can grant you a ring that gives you unlimited werewolf transformations. If you want a hint for how to obtain that reward, then just remember to not turn on your fellow werewolves.[DOUBLEPOST=1386783858,1386783628][/DOUBLEPOST]Oh, one thing I wanted to add about werewolves. Power attacking will do an awesome swipe that ragdolls most enemies. It's so much fun to charge at some bandit trying to kill you and send him flying across the room. They can also roar which casts fear on everything in range, and later on can gain special totems to summon spectral wolves and other stuff.