How much text is in your scores that this would be a significant issue of readability? Are you getting complaints from musicians that your scores are hard to read? Is the issue with text notes or with the readability of the music font?
In my scores, the usual text is the song title, composer, tempo information and occasional markup. I occasionally have lyrics and I use the default font for those as no one has ever complained about readability. I use the LilyJazz music font because I prefer having the simplest shapes and don't care for ordinate music fonts. I also use LilyJazzText for markup and other text for stylistic consistency, except for lyrics. I find the default Lilypond font to be more readable for singers. Looking at the various samples, I did not see sufficient difference to prefer one over the other. Since this is a commercial font, I would just go with the cheapest one. It is also quite likely that there is an equivalent open source font that is nearly identical.
