Btw, just got a 3-pack of Pilot Varsity disposable fountain pens and it's pretty nice. It feels like a rolling ball with a nib, and that pen was my go to pen for a long time before the Pentel EnerGel replaced it.

EnerGel Alloy RT Gel Pen, Medium Point, 0.7 mm

(copy/pasted from my amazon order)

I've been using this pen for a long time and I just love it so much.