I experiment with this a lot, my fonts folder is full of fixed width fonts. But I somehow always go back to Monaco (11pt) white on black background. This is using TextMate, non anti-alias. (Example: http://tinypic.com/r/2hnayq8/7 ) Perhaps TextMate is too limited in this respect (it doesn't handle proportional fonts well).
I searched through this whole thread looking for 'alias' to see if anyone else also can't stand anti-aliased fonts for coding, and I see that there are a few of us. I also always end up back with Monaco, but 10pt black on white. Perfectly readable and easy on the eyes.
