well, thats the official line... it doesn't pan out on several occasions.. vampires may not be good, but they don't have to be 'evil' either, but the slayer motif kills them anyway (including on one occasion out of pure 'you hung out with my boyfriend' pissyness).
actually, angel specificly states about drusilla "First I made her insane, then I made her a vampire." Drusilla was out of it because Angel apparently tourtured her well past the breaking point before actually killing her... There is a heirarchy of evil in vamps, and this ep puts Angel well worse than spike ever aspired to be. Spike was a killer, and good at it, and still has no particular remorse, but he had the capacity to care even when 'soulless', and I don't think they ever showed him engaging in torture (except of angel, and that was mostly dru). Angel was not merely hungry for blood and cocky about his powers, he was actively evil... I suspect if he had gotten the chip in the head he would have stayed just as evil, finding ways to incite others to do the actual infliction of pain and screwing with people's heads.
I'm so psyched Spike won, btw....
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