I accidentally found that
Calisto MT looked sharp and clear on e-ink screen. It's an old style serif font with large x-height but easy to read. If you have
Office 2007 installed you already have it on your computer. I uploaded it for the people who don't have and want to try it.
Font verision is 1.26 without any changes. Tested on KT with fonthack 1.3.1
[Mod: Attachment deleted. Please do not upload copyright material to MobileRead without the permission of the copyright holder.]