MUJI 0.5mm Gel Ink Ballpoint Pens - 9 Pack (5 Black, 2 Blue, 2 Red) - Smooth Writing for Office, School & Note Taking

As a pen collector, I loved how incredibly precise these pens are. They write very smoothly, the ink doesn't blotch unless I use it to underline a book. The colors are very vivid and rich. The cons- It is not very comfortable to write with for a long period of time.