[DNSB]

Originally Posted by dclauzel

Ah, my eyes! It burns! Ok, no, it is not that bad, but modified Charis SIL is way too thick for me. It make everything look like it is written in bold.

And for my eyes, it's just a touch heavier.

You might want to try the unmodified Charis SIL then or Deja Vu Serif. For me, these are the two fonts I've found have the best support for diacritical marks which are quite popular with some authors. I got tired of seeing names with boxes where some of characters should have been. Deja Vu also offers better support for the Greek alphabet than Charis SIL.

Another font I've tried is the Merriweather font from Google Fonts. Quite readable for me but a lack of diacritical support. I've stuffed part of my font tester file into this message just to display what characters I've run into.

The next lines display various diacriticals and some special characters.
 
Macron
Ā Ē Ḡ Ī Ō Ū Ȳ Ǣ Œ̄ ā ē ḡ ī ō ū ȳ ǣ œ̄
 
Breve
Ă Ğ Ŭ ă ğ ŭ
 
Grave
À, È, Ì, Ò, Ù à è, ì, ò, ù
 
Acute
Á Ć É Í Ĺ Ń Ó Ŕ Ś Ú Ý Ź á ć é ģ í ĺ ń ó ŕ ś ú ý ź
 
Circumflex
 Ĉ Ê Ĝ Ĥ Î Ĵ Ô Ŝ Û Ŵ Ŷ â ĉ ê ĝ ĥ î ĵ ô ŝ û ŵ ŷ
 
Tilde
à Ĩ Ñ Õ Ũ ã ĩ ñ õ ũ
 
Umlaut/Diæresis
Ä, Ë, Ï, Ö, Ü, Ÿ ä, ë, ï, ö, ü, ÿ
 
Dot
Ċ Ė Ġ İ Ż ċ ė ġ ż
 
Ring
Å Ů å ů
 
Cedilla
Ç Ģ Ķ Ļ Ņ Ŗ Ş Ţ ç ķ ļ ņ ŗ ş ţ
 
Caron
Ǎ Č Ď Ě Ǐ Ľ Ň Ǒ Ř Š Ť Ǔ Ž ǎ č ď ě ǐ ľ ň ǒ ř š ť ǔ ž
 
Thorn: Þ þ  Eth: Ð ð  Yogh: Ȝ ȝ  Ezh: Ʒ ʒ
 
ß ¿ ¡
 
⅛ ¼ ⅓ ⅜ ½ ⅝ ⅔ ¾ ⅞
 
Æ æ Œ œ ᵫ ff fi fl ffi ffl ſt st
 
Shīgū Tomanāk Sothōi
 
Hŭrăka Zŭrăk Ǣtesk Œ̄tesk

Regards,
David