Pentel EnerGel RTX Retractable Liquid Gel Pen 0.5mm Fine Line Needle Tip Black Ink (15)

This is, by far, the best pen on the market today. This is not hyperbole. I write a lot and I go through so many pens, so I am picky. I have not found a pen that writes smoother, puts down a cleaner line with NO BLOBS, is lightweight and durable, with a comfortable balance and grip. The 0.7 is good, 0.5 is excellent (but that's a taste thing). If you care about what you write and what you write with, BUY THIS PEN!

My favorite pens! I love them in all colors and use them every day at work. The write nice, do not smear and they are a nice diameter and weight for people who do a lot of writing.

My new favorite pen! I’ve always used this brand but never this size tip. Very good but idk if I am just writing a lot or if they go pretty quick lol but nevertheless still great quality!!! I have a higher standard for pens now

Best pens out there. Ink is silky smooth, dries fast and is the most lefty-friendly I’ve ever used. Tip is super fine but still flows crisp and legible lines without feeling scratchy or catchy

Been buying this brand as my pen for years now, been buying it at staples at first but now at Amazon for bulk. Pen writes smooth, longevity runs out faster than most pen but the comfort and quality is exceptional. You can also buy fillers until your pen will not work anymore for cheaper refills.