Personally, although I was not wholly dissatisfied with the change, I do prefer my vampires more in the style of Underworld; cold and foreboding. My sister Azura on the other hand likes Twilight. Blegh.
So I wonder, within all the vast array of vampire literature and media, which is your favorite type?
And also, which do you think would have been most fitting if the themes of Dawnguard were different?