I have a Dua.
IMO a washer pivot is more basic, sturdy and care-free than a bearing pivot. Not sure what your usage is going to be so when you say "all around knife" I can tell you that my Grayman can certainly be an all around knife. It's the one I'd want if stranded in a Central American jungle for a month and then be right at home and not glaringly out of place at the ambassador's dinner party, slicing the champaign foil upon my rescue. Hard to match a Dua for tough AND having a classy side...at least the Ti-ti version.
Where there's a Grayman folder question I simply tell people, "If you like the look just buy it. There will be no issues with the knife." IMO it's everything one could ask for in a folding knife its size.