My newest nib swap: Hocoro 2.0 with gold-tone Sailor F-4 fine.
I now have a very special gold tone Hocoro nib, and a 2.0 stub in my Sailor 300.
@paradoxmo
I don't think these pens are available in the USA
@blaise Hocoro is definitely available, at various places including Yoseka. The Sailor 300 is discontinued