I have many other pens that I keep buying losing/using/forgetting/discarding but they have been constant. And god Reynolds 045 were the "professional pen" for students when we meant business - that means even writing in the exams or board exams. I still have it one or two in my house.
There was one from from Mitsubishi. I can't find a link for that.
All the fancy fountain pens keep coming and going (or staying in some pen cases) in my life these were the best.
I have been using these for years now and they are the most comfortable for me to write with.