I have a Tombow Zoom[0] and I liked it so much I bought another, so now I have two. It's 0.5mm but it's a very bold line, especially on smooth paper like a Rho

I have a Tombow Zoom[0] and I liked it so much I bought another, so now I have two. It's 0.5mm but it's a very bold line, especially on smooth paper like a Rhodia pad. It appears you can get 0.7mm cartridges for it too. They are super classy and IMO great value for money. However they do have one problem, which may or may not affect you. The cap doesn't like to stay put on the back of the pen during robust use, e.g. sketching. This happens more with the silver model than with the black model for some reason. For me it wasn't a show stopper, it just means I use different pens for bar sketching or, if I really want/need to use the Tombow, I remember to pocket the cap before I get going. I'm also a big fan of the Energel though, just today I was marveling at how thin and precise its 0.5mm line is. If you're into the Uni-Ball look I recommend trying the Eye, which you can get in Fine or Micro or Needle. I guess in the US it's called the Vision?[1] Might be too thin for you and the aesthetics aren't for everyone but the Micro is my go-to sketching-and-writing pen for when I'm out and about and might lose it. Works much better than the Tombow on toothy papers, like proper artist's drawing paper. They fit very nicely into many spiral bindings too. Good luck with your search! [0]: https://www.jetpens.com/Tombow-Zoom-505-META-Liquid-Ink-Rollerball-Pen-0.5-mm-Hairline-Silver/pd/27603 https://www.jetpens.com/Tombow-Zoom-505-META-Liquid-Ink-Roll... [1]: https://uniballco.com/vision-1/ https://uniballco.com/vision-1/