... not in the accounting sense but as a competition?
Although I have yet to try seriously all the pens I own let alone more coming in, there were already a two or three about which I was thinking that, maybe, they lacked a long term future in my hands so perhaps I should decide which (if any) I could sell sooner rather than later?
To this end I inked a few, not all of those under consideration for moving along, and set about a "write-off".
That did not work. I liked all of them.
Maybe I could discard one on aesthetics? No, the most boring one had a lovely, very fine yet somewhat flexible nib which wrote lightly and easily in the hand.
I am back to the longer term approach; see which ones do not get brought back into rotation so much, and to get to there I need to use them all for a while.
Have you ever tried any sort of method to determine what you might keep or what you might sell or pass on? What was the result of that?