I'm doing mine this weekend and I plan to slice- from what I understand, it gets a bit more blood out, as the heart continues to beat, whereas severing the brainstem stops the heart and blood basically drains out, leaving a bit more in the meat. The bird lives longer with the slice method, but I hardly call it "cruel." It sounds worse than it is- we've all cut ourselves many times. A clean cut hardly hurts at all. While differences to the meat are certainly debatable, I'd rather get the blood out, personally. I'm sure that the bird would prefer neither method, but to be blunt, as long as it's not torturing or causing intentional pain, I really don't care much that the bird sees it coming or bleeds for a few seconds while conscious.