Since I don't want eye strain, and have a mild OCD, I want the same font and sizes across all the monospaced text editors that I am using.
The font I decided in using is Ubuntu Mono with some patches to look good on my vim. It's a regular truetype font.
Thus I went into the journey of setting it up across four applications (gvim, terminal, IDEA and VS Code).
Turns out that IDEA and Visual Studio Code think that the font size should be 16 Pointy Thinigies, while GVim and the terminal would rather go for 12 Pointy Thingies, to render a text with the exact same size in pixels.
Good job Linux.