The ones on the left that people guard with their life. The thing they choose write with every day. The pen of choice in every meeting. Kept in their draw, never on their desk. And never lent out.
The ones on the right always go missing through neglect. No one ever knows where. And we have to buy another box.
I estimate we use 1 loved pen to every 10 unloved pens.
What ever you buy, buy something that you love. If you love it you will care for it.
Make sure it is made well. If you love it you won't want it to wear out.
Made to last the duration. One day landfill will be landfull.
Made to do what it say is does, perfectly. Then you won't want to replace it.
Buy well, buy once.