So, to make it a bit more objective: wat are the criteria that make a good fountain pen? The pen that meets these criteria the best, would make the best fountain pen, wouldn't it?
I have already read: dependable (objective), beautiful (subjective), valued by many (objective), writing quality (subjective).
What other criteria do you value in a fountain pen?
How about fit or feel or balance in the hand? For example, my silver Parker 75 looks good, writes well, always starts, and is a popular pen. However, the triangular grip feels a bit small for me so I don't use it for long writing sessions.
On the other hand, my 61 flighter does look good, feel good, writes smoothly, and starts well. I don't know about "valued by many" though.