I've had a higher end one as an adult as my main daily pen for years now and have yet to have a single spill (knock on wood).
I own several Lamy, Pilot, and Platinum.
If you ever write with a Pilot Custom 823 on decent paper, you will never be able to go back.
(If you enjoy the friction in writing, you need to try Lamy Al-Star/Safari fine nib, or Pilot Metropolitan fine nib. Medium nibs are smooth and some people don't like that.)
And even as the prices are high, they do last literal lifetimes.
Platinum preppy's are not refillable but were my first fountain pen, can be had in many ink colors, and are about 5 bucks.
If you like smooth, go with Medium nib, and if you like some feedback, go with Fine, as I said.
Writing on decent paper (not always the expensive one) with a decent medium nib pen is something everyone needs to try at least once.
[0]: https://www.amazon.com/Safari-Fountain-Charcoal-Medium-L17M/...
[1]: https://www.amazon.com/Pilot-Metropolitan-Collection-Fountai...