I try to use all of my pens equally, but the most conveniently located is a Hongdian 1851 Forest Purple EF that my wife gave me. I keep it inked up with iroshizuku murasaki-shikibu.

I have a Lamy Safari, daily driver for about 4 years now. I run a chemistry lab, so I still do a lot of writing.

I use my FPR Indus with FPR ultra flex nib every day. Mainly because my only other fountain pen in working order has a fude nib lol. The flex nib makes it versatile for both writing and drawing.

It varies over time, but right now a Safari with a Chinese stub nib, and a “special alloy” Pilot Capless. For intermittent notetaking, the Capless is a particularly useful pen.

I mostly use my Traveler’s Company brass fountain pen fitted with a Schmidt EF nib because It’s always with me attached to my Traveler’s Notebook. My backup 2nd most used was YStudio’s Brassing Portable which I ended up losing while traveling in Italy’s Adriatic coast. I typically cary 2 pens with different colours. In the Traveler’s Company pen I use Diamine’s Writer’s blood and in the YStudio, I was using Diamine’s Hell’s Bells. Having 2 pens with two inks enables me to have more flexibility in contextual jotting.