When comparing Liberation Mono vs Dank Mono, the Slant community recommends Liberation Mono for most people. In the question“What are the best programming fonts?” Liberation Mono is ranked 17th while Dank Mono is ranked 61st. The most important reason people chose Liberation Mono is:
Liberation Mono works well with hinting on high-resolution displays.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very readable
Liberation Mono works well with hinting on high-resolution displays.
Pro As of 2023: Second Best screen-modern drop-in replacement for MT Courier New
Metric-compatible with Monotype Courier New, dot 0 (zero), modern non-Kettler lowercase l (ell), 660+ glyphs, OFL-1.1 license
Pro Compact line height
Just like Courier New (the metrics of which this font emulates), its line height isn't too big, which results in more lines on the screen, compared to Consolas and several other more popular fonts.

Pro Has Bold typeface
Pro Italic variant with handwriting style
Pro Has ligatures
Pro Cheaper alternative to Operator Mono
Operator Mono costs about $200. Dank Mono looks similar but costs only £40.
Cons
Con Difference between "0" and "O" isn't clear
It can be difficult to tell the difference between the number "0" and the letter "O". However, the Fedora Project has a slightly altered version of Liberation Mono that fixes this with a dotted zero.
Con Liberation fonts are ugly
Con Too thin
He needs to add variants of thickness and then I think he would have a sellar product. You have to set your font size extremely high on hi-res displays to look the way I think he wishes it to be, but then the font is too large.
Con Looks a bit inconsistent, especially italics
Lowercase k looks weird.
