I'm surprised how close is DejaVu Sans Mono to Source Code Pro.
I like to code with about a 9 point font, in order to maximize the amount of code per screen without going too far into the illegible. At that size, the proportions of even a single pixel are large enough to make any anti-aliasing annoying. You lose the sharp contrast that every good font needs to have along its edges.
Bitmap fonts are my favorites.
Mine too. Dina is my font of choice for now, also because it does a good job "to maximize the amount of code per screen without going too far into the illegible", among other things. If you code just with ASCII, maybe you'd like to try it if you haven't already.
It has a very different look and feel though.
Liberation: http://cl.ly/image/2y2E3m211H1V/Image%202013-09-09%20at%2010...
Ubuntu: http://cl.ly/image/000u0s3E2b2V/Image%202013-09-09%20at%2010...
Anonymous Pro is another excellent choice, very crisp.
I've always used Consolas since it's been out, but after seeing Source Code Pro, that does seem easier to read.