I'm looking to add a Duofold next to my collection. I tend to prefer modern pens (20 years old and newer). I think the Duofolds are gorgeous, but there's enough variety of them that my instincts tell me that probably some are better than others.

I'm not looking to put my pen under glass, I really want to use it. Limited Edition doesn't do much for me unless the pen really looks special.

Any advice on specific models I should chase after? What would be identifying characteristics? What about editions to avoid?

Many thanks.

Marc