When looking at razors on e-bay, classifieds ect. it seems that most blades have a bit of a smile. Im a noob and was wondering if any razor is supost to have a flat edge. When I see some razors like the round tip type they seem to have a straight edge at least pics of the new ones. Are razors with a flat edge harder to shave with. I do have a razor with a flat edge and a round tip but have not shaved with it yet.