HI look forward to discussing Viscontis with Visconti experts - Italians.
The stub would be fun to write with, but difficult to use for record keeping, and grading. For official writing, I think I should use a Fine or Extra Fine.
So, should I go for a nib to use for personal writing or official writing?
Count me out then because I'm not Italian.
Like Stefano, I like the old models.
Stubs...hmm...maybe you've been hanging out at FPN too long?!?
Seriously, when do you think you'll use the pen more, personal or official? Perhaps that will help you decide. But you indicated you wanted to use it for grading and record keeping; in which case I would opt for the EF or F, particularly with grading, e.g. comments on the margins or between the lines. I couldn't do either of those even with an M. The quality of the paper you'll be receiving often won't be say Moleskine quality, bleeding becomes an issue so the narrow the nib the better.
I haven't tried the Homo Sapiens yet, none of my local shops have them in yet. So I don't know how wide those Pd nib run.