I have often observed that in other distributions (not Ubuntu derivatives) even after enabling font hinting and rgb aliasing, the fonts dont look as good as Ubuntu.
What are the specific optimizations carried out in ubuntu for font display?
Ubuntu – How does ubuntu render fonts better, than other main linux distributions
fonts
Best Answer
There is a bit of subjectivity (to say the least) on fonts and font rendering.
See : http://blog.mageprojects.com/2011/05/27/linux-fonts-compared-ubuntu-11-04-linuxmint-11-fedora-15-windows-7-sabayon-5-5/
That first link has a screen shot of several fonts on several OS and the author concludes :
(Authors words, not mine).
There are a few resources you can look into, you will have to decide for yourself what you like best.
A few resources you might look at (you mentioned you were using Fedora)
https://wiki.ubuntu.com/Fonts#Font_settings
http://blog.andreas-haerter.com/2011/07/18/tune-improve-fedora-fonts-typeface-ubuntu-like-sharp-fonts
http://fedorasolved.org/Members/khaytsus/improve-fonts
Rather the telling you how to configure you fonts, I hope those links help you understand how to configure them to your personal preference.