Hard to say Bob, but nice discussion. I haven't been fortunate enough to get my hands on some of the things that likely would qualify. Chas Green for example of one of many.
Also I think there is a big difference in the discussion whether applied to: 1 mechanical quality, 2 fit and finish, 3 embellishments/ engraving.

All in all I go Lefever, with due respect to occasional smaller makers and examples. The Lefever has a grace that is not duplicated in the other big makers.