Xbox 360 Vampire or Werewolf? (Dawnguard)

I am currently a werewolf in Skyrim and the Vampire lord has offered me his blood and to be a vampire. What are the advantages and disadvantages of being one? Can I ever "undo" it? Do people aggro me on sight? Does biting people put on bounty? Please help because I wouldn't mind either or ... It's just I would like to know what I would be getting myself into.

well it depends the vampire lord is good can transform and revert at will if you don't like SPOILERS stop reading and at the end you can turn the sun "off" but if you are a soldier the werewolf is extremely better also vampire lords are like werewolf in the aspect you have to hide or you'll get a bounty wile transforming but you don't get bounty for biting people and you can even bite people during the day and this I heard I'm not sure you can be a level 4 vampire and NP CS wont be hostile towards you

hopped it helped
PS you can bite people if you use the human vampire (not in Vl form) power that makes npcs friendly towards you

I heard Serana can turn you into a vampire lord more than once, do you know if this is true?

no i do not

Here's the facts:
Vampire Lord is better than a werewolf in combat.
The longer you go without feeding as a vampire, the more your vampire powers grow, but you are more weak to sunlight and fire.
You can feed on people while they are asleep, but if you aren't sneaking they are likely to catch you.
You can feed on people that are awake if you use vampire seduction on them (a power you get when you reach stage 2 of vamporism).
Getting caught feeding will result in a 40 gold bounty.
Getting caught transforming into a vampire lord will result in a 1000 gold bounty.
Becoming a 4th stage vampire will no longer make people hostile.
In sunlight, your health, mackicka, and stamina don't regenerate (unless you have enchantments that increase regeneration), and there base value is decreased (they are decreased more and more as you reach higher levels of vamporism).
At the end of the dawnguard questline, you will get to block out the sun, and won't have to deal with it's negative effects.

Serana can turn you into a Vampire Lord. And the same can be done if your a werewolf, but that's done by

m

man thank i doidnt know that im a ps3 player so i only know what i see (waiting for dawnguard it look asome)