AsherI like its biblical roots and its meaning. Ashton is handsome too, though. But I think the above points and the fact that Asher is a genuine first name and Ashton originally a surname gives Asher the edge.
AshtonBoth are pretty good but I don't love either. I think I prefer Ashton nn Ash but I don't feel strongly about it.I knew an Asher in middle/ high school and I've never known an Ashton. --------------