I'm about to make my first foray into the world of customized nibs and I'm having trouble deciding whether to go with a Pendleton Brown butter-line stub or a Mike Masuyama round-nose cursive italic for a Pilot 823. I'm looking for a nib width of approximately 0.4mm on the downstroke for use as a daily writer - I write fairly small with lots of math (small subscripts/superscripts are an issue to me). This is a sample of my normal handwriting when note-taking (stock pilot M nib).
Any perspective on which one to pick would be greatly appreciated. In particular, I'm wondering:
- how the two customizations compare in terms of line variation and forgivingness (I normally normally hold the pen at a 45-degree angle to the paper, with a little bit of inconsistent rotation as well)
- how controllable the thickness of a line put down by MM's RNCI is - this post mentions that the BLS's line width can be controlled by the amount of pressure put into it; is the RNCI capable of something similar? The ability to put down a finer line when necessary would be great for subscripts.
- how the BLS looks up close - there's a picture of the RNCI up-close here, but I haven't been able to find a similar pic for the BLS.