Sometime around 2010 I discovered the Bic Atlantis pen, and have been using them exclusively since. I purchased my first pack of the new Bic Glide (supposedly nothing changed with them other than the name).
I have liked this pen because not only do I get little to no smudging, but I do not get the choppiness that i do with some other ballpoint pens.
I used to use a lot of felt tipped pens in my youth, but in 2003 I started to work for a research laboratory and there are quite strict rules about which pen you can and cannot use. Felt tip pens were out.
Curious what others use.
The Zebra Sarasa X20 Dry has been my go to for a long attempt at finding a small diameter gel pen. The whole Sarasa line up is pretty neat though. I think mileage may vary depending on indivudal writing techniques.
Found a blog that breaks it down: https://www.jetpens.com/blog/Zebra-Sarasa-A-Comprehensive-Guide/pt/652#Standard%20Zebra%20Sarasa%20Gel%20Pens