I can recommend getting Kaweco fountain pens and nibs with the tune&smooth service from @thenibsmith
If you’re grabbing a Kaweco (or swapping nibs), I genuinely recommend The Nib Smith’s tune & smooth service. A well-tuned nib can completely change the journaling experience—especially if you want consistent flow for writing and little ink doodles. It’s a great option when you want your pen to feel “just right” out of the gate.
You'll be taken to Nibsmith to complete your purchase.