More to your question, the Baron from Berea Hardwoods is a great pen, either in the rollerball or fountain pen. I turn quite a few in the various platings.
If you like the Baron, the Sedona uses the same bushings but has a different look. I like the rounded ends and the center band treatment.
Both the Baron and Sedona seem to be the right size for a man or a woman. Myself, I have large, stubby hands and prefer the El Grande/Churchill sized pens.
As to the Baron II, it looks identical to the Baron, but with a 12 sided nib section instead of the six sided nib section we're familiar with. However, when in doubt, it's always better to go back to the supplier for the required information. Why not drop the folks at Timberbits a note and ask?