Vampire. I have a thing about them.

But also, turning into a were every full moon would be painful and I'd be worried about who I killed while I was a were when I turned back. If I was a vamp I could restrict my killings to people who deserve it more in society (not that I agree with the death penalty) but I could target people who committed heinous crimes. Then there's the wandering round naked until you find clothes when you turn back assuming you don't have the control of your mental capacities the same in were form. Also weres age, if slowly, but they still age as opposed to the almost guaranteed immortality of vampirism. Also as a woman, pmt is bad enough once a month, I'm guessing weres can breed so then I'd have to still cope with the pmt but also have the full moon shizzle to deal with too. Also the whole pack mentality of weres. Animals still conform to pack mentality so I'd be controlled somewhat by an Alpha male, where as in the vamp world the same sexism doesn't seem to exist…

… not that I've thought it all out or anything.