Don't forget that razors also have different origins. Some like sheffields, others like german made razors. There are spanish, frensh and swedish razors. Polish and russian razors. Japan has made some excellent razors. There are framebacks. Wedges. Hollows. 4/8, 5/8, 6/8, 7/8 and 8/8's. Rarities like 3/8 and 9/8's. New razors. Antique razors with history. They all feel and shave differently.