I use fountain pens and take notes at work with fountain pens. But not budget ones -- not luxury ones either, but in the range of €100-150. Part of the pleasure is the nib, sure, but also the body and the metal cap and the weight. I doubt I would derive the same enjoyment from a Lamy Safari but I must admit I never tried it.
You wouldn't, the Safari is too light and plasticky feeling. But the Pilot Metropolitan has a metal body that gives it a comparable heft to more expensive pens, and writes beautifully.
You might look at TWSBI fountain pens. They're still cheaper than your normal range, but very good quality, and offer some of the more fun mechanisms, like the pump pistons that fill the body itself with ink--in a clear body, it looks cool.
Fountain pens that work well without fuss, like Lamy Safari, or Pilot Metropolitan, really are nicer to use than ballpoint or gel pens, and the slight extra effort to using ink in cartridges or from a bottle adds familiarity and comfort to it. It’s not a pen, it’s your pen, and the longer you have it, the more attached you are to it. The more attached you are to it, the better the act of using it feels. It makes your world feel less disposable.