The issue there is that “best X” varies wildly depending on purpose, budget and usage.
Take a pen:
For me, I mostly keep pens in my bag to make quick notes and lend out.
The overriding concern is that the pens are very cheap, can be visually checked whether full or empty, and never leak, because they will spend a lot of time bouncing around in my bag, and I am unlikely to get them back when loaned.
The issue there is that “best X” varies wildly depending on purpose, budget and usage.
Take a pen: For me, I mostly keep pens in my bag to make quick notes and lend out. The overriding concern is that the pens are very cheap, can be visually checked whether full or empty, and never leak, because they will spend a lot of time bouncing around in my bag, and I am unlikely to get them back when loaned.
A calligrapher has very different requirements.