After searching high and low for many years, I've settled on Akkurat Mono--a commercial font, well hinted, and gorgeous on Mac OS X.
edit: link: http://www.lineto.com/The+Fonts/Font+Categories/Text+Fonts/A...
edit: link: http://www.lineto.com/The+Fonts/Font+Categories/Text+Fonts/A...
Edit: 190.380 USD or 140 EUR, Really? How can a font be that expensive?... I could pay 10 to 20 euro but man, the price of this font is almost half of my rent...
Edit 2: Just discovered Inconsolata, also beautiful, and free http://www.levien.com/type/myfonts/inconsolata.html
I do like Inconsolata as well.