Neat.

I wish the sample text included _underscores_, since I have occasionally found that they disappear with certain combinations of font + size + renderer.

And a run of all the numeric digits 0123456789, to show how their heights align.

And [square brackets], to show how easily they are distinguished from certain other glyphs.

And the vertical | bar, for the same reason.

...

Adobe Source Code Pro and Ubuntu Mono were my finalists. I think my preference would come down to window and font size, since Ubuntu Mono seemed to be narrower and leave more space between lines.

(Also, I kind of rushed the first few comparisons, so it's possible that I prematurely eliminated a typeface that I would have liked more.)