Here's what it looks like on mine right now (looks same on windows and linux):

That's some python code with Consolas, Anti-aliasing set to 'Standard', and fractional font metrics turned on: http://i.imgur.com/j3Gsw.png

And fractional font metrics turned off: http://i.imgur.com/e2jhE.png

(I don't know if imgur does/performed any compression on it or not.)

There are also multiple settings for font smoothing, so you can tweak it to your liking. (Subpixel settings)

Combine this with great themes (even the light themes look unreal), I can't see why this isn't more popular!