I have certain razors that have an amazingly smooth feel when shaving, and I can't figure out what distinguishes them from my other razors. The smoothest I have right now is a Hart Steel that is like butter. I also have an old W&B that's pretty close. I've had many top-notch razors over the years honed by a variety of well known honemeisters, but certain razors just stand out among them. I notice that the Hart has a narrow bevel, as did my Zowada which was pretty damn good, so I'm wondering if that might be a factor. Also, thicker blades such as 1/4 or 1/2 ground seem to be more likely to fall into the supersmooth category. But I know that there are many on the forum with great old full hollow grounds that shave this way as well. Any thoughts?