I bought a Platinum Century 3776 in a medium nib and I am really liking the size of the nib. I found it to be much finer than my other japanese mediums though, such as the Pilot Metropolitan and the Pilot Kakuno. I also quite like the nib on Hero 616. However, I found the Century 3776 nib to be a bit toothy for my liking, while my 616 is fairly smooth I would say. How do the fine Pilot fine nibs compare? I was thinking of buying a Metropolitan in a fine nib but just wanted to check in, before I regret a purchase that will simply lie on my desk!