Originally Posted by Katsunami
I've been testing some more fonts, such as the old standby's Garamond, Caslon, Minion Pro, Latin Modern (LaTeX default font) and Georgia.
To be honest, I find these fonts to be dreadful on the Kindle Paperwhite.
The two fonts that did surprise me are Trebuchet MS and DejaVu Serif: they look quite nice, but they lack weight compared to Caecilia. They are too thin for my liking. This is a complaint I also often had (have) with hardbacks: many of the ones I own have thin fonts, which is not good for people with bad eyesight.
As I don't have any options to easily add some weight / thickness to fonts (and don't have any knowledge of font creation whatsoever), I'm back to Caecilia 4 again. For reading long texts, I don't really like non-serif fonts such as Futura, Helvetica or Verdana.
I agree with you on the fonts you mention. Even with added weight they just don't look good. I do love Trebuchet and have added weight to that one. It's from the Kindle Fire where I got my copy. I read with that or did till I got the PW now the KF just sits on a shelf.
Try Charis SIL posted here in this thread. It's really nice.