I used to use the Sanford Expresso pen, which was, without a doubt, the finest pen I have ever used. I used it for over 25 years (since my first year of internship).
Several years ago, it became the PAPERMATE liquid gel pen, and is now known as the Liquid Flair Marker Pen. This is NOT a very good pen.It leaks and smears. It dries out quickly if the cap is left off (the Expresso could be left open for DAYS with little effect). It is short and hard to use for long periods. However, I like the color of the ink and so I stay with this pen.
I do wish someone would reinvent the Sanford Expresso pen.
Thank you for asking for my opinion.
By the way, your service is EXCELLENT.