[foldedcornice]

Gel pens can arguably be as enjoyable to use as fountain pens, with easier refills and less to no need for maintenance. Gel pens also work on all types of paper, with no concerns about smudging due to drying.

Pentel Energel refills are very smooth, much more so than Pilot G7 cartridges (but not water-resistant). Zebra Sarasa refills are almost as smooth (and are water-resistant, which can be useful if you get caught in the rain).

I use both gel pens and fountain pens, with gel pens for quick notes and writing while on transit. I could comfortably get by with only gel pens—many people have, as I've seen forum posts by former mathematics and physics students who posted photographs of dozens of refills used up over their degrees. I still prefer fountain pens when I'm at a desk, though it's a pleasant luxury for the smoothness—any significant strain when handwriting for many pages went away when upgrading to higher-end gel pens.

[wrp]

If you are a FP lover but want to try a gel for convenience, I found the Pilot Hi-Tec-C in 0.5 mm to give the writing feel most like a FP. (https://www.jetpens.com/Pilot-Hi-Tec-C-Gel-Pens-Standard/ct/...)