What is the main differences of these 2 razor blades? They both are very sharp, it might be me the bic seems a bit smoother, is that the chrome plated blade? I also noticed this may sound funny the bic blades seem to me to not look so scummy at all after a shave, still looks clean as if I put a new blade in. The feather blade and some others usually have scum and skin cells on the blade after each use which doesn't come off. I have no idea why this is, the only thing I can think of is stainless vs chrome or something. Another important thing for some people is the price difference, although I don't really want to put that into the equation. If somebody can let me know these small details that would help ease my thoughts about it, as well what I want to do for next purchase on blades. And I do like very sharp and a clean looking blade!