The pens that see the most use are my Lamy Safaris, Pilot Kakuno, a basic biro and a watercolour brush pen. A Lamy is usually on my lanyard as I do prefer using a fountain pen on placement. It is a cheap pen so I'm not overly fussed about lending it to someone for a second or two. A back up pen, in the form of a biro, usually accompanies it as running out of ink in a pen is a nightmare!
The watercolour brush pen (the one shown is a Kuretake one) is used for headings of a page and to write the date in each journal entry I do weekly. I put in some black ink and dilute it with a few drops of water to give it a faded look :)
Having amassed such a huge pen collection, I think I should be good for quite a few years so I don't anticipate any new purchases this year. I've not actually purchased any stationery since the Lamy Safari Dark Lilac last year and a dent has barely been made in my stash.
Do you do something similar?