I’ve used a fountain pen frequently over the years, and absolutely loved it. There’s something really special about the process of putting a pen to a nice piece of paper with quality ink. The fluidity of the ink on the paper is fantastic.
If you’re wanting to dip your toe into using a fountain pen, then Pilot has an excellent-yet-inexpensive fountain pen, the Metropolitan. It’s Amazon’s best seller in fountain pens, and it’s fantastic. I prefer the fine nib, but to each his own. You can’t go wrong with a high-quality fountain pen for $15.