I wish I had more experience with nibs. I've used, essentially, only three types: The nibs that come packaged with Dyacom kits (not sure of manufacturer), the nibs with Beaufort Ink (manufactured by Bock), and a Schmidt nib. All stainless steel. The Dyacom was the worst. Scratchy, stiff, and dried up and clogged quickly. The Beaufort nibs have been pretty good and the ones that I have the most experience with. Fairly flexible and write well. But I sometimes find that the flow dries up and you need to twist the pusher to get ink back in the nib and flowing.
The Schmidt--the most recent one I've used--is by far the best. Nice and smooth. Ink never runs dry (until the resevoir is empty). Doesn't leak. I really like it. I'd always used Bock as a matter of course, mostly because all my fountain pen kits are Beaufort Ink products, but I just may see if there's a way switch to Schmidt.
The Schmidt--the most recent one I've used--is by far the best. Nice and smooth. Ink never runs dry (until the resevoir is empty). Doesn't leak. I really like it. I'd always used Bock as a matter of course, mostly because all my fountain pen kits are Beaufort Ink products, but I just may see if there's a way switch to Schmidt.