I'm using the smallest & finer-grained preset of font sizes, FWIW (2_16-30).
That said, I'm also using heavily tweaked font settings when it comes to font sizes, since I'm using CFF OpenType fonts tailored for print, not screen, so I'm also playing with scaling on a per-font basis to smooth things over

[but that's another subject, falling under the Fonts Hack's umbrella

].