Apple has famous typographic literacy and graphic design taste.
But Microsoft, with a far worse reputation for taste, has employed famous typographers for each major release of its OS, contributing serious, important typefaces. Vista included Lucas de Groot's Calibri and Consolas, for instance.
Even Palm, a relatively minor company, has a real face commissioned for the Pre.
But Apple's new typeface is just a tweak of Bitstream Vera Sans Mono, Linux's open source monospace sans?
The major difference, as I see it, is that Apple includes fonts that are good for publishing, and Microsoft includes fonts that are good for reading on a screen. For example, Consolas is designed for a screen with sub-pixel rendering.
I think this difference is apparent in how fonts are rendered on OS X and Windows, i.e. Windows "snaps" fonts to pixel grids for readability.
"Just a tweak" minimizes the work necessary to make typefaces (especially monospaced typefaces) produce good results. The hinting in Menlo seems to produce really good on-screen results on my Mac; preferable to Consolas, Liberation, BVSM, Pragmata, etc.
It's a different kind of work. I've purchased several typefaces with beautiful letterforms that are useless for coding on my mac because they are not hinted or hinted poorly. A couple more have really bad metrics that the "height"/"width" sliders can't really compensate for in the terminal.
Zapfino is the most immediate counter that comes to mind. Monaco was for decades the best monospaced font going. My Mac has Futura on it (a fantastically influential and important font that I happen to dislike aesthetically a great deal), Gill Sans (probably the best sans serif body font), Hoefler Text (gorgeous), Optima and Palatino, for starters.
You don't need to commission new fonts if you have the good taste to buy the distribution rights for excellent existing fonts.
But Microsoft, with a far worse reputation for taste, has employed famous typographers for each major release of its OS, contributing serious, important typefaces. Vista included Lucas de Groot's Calibri and Consolas, for instance.
Even Palm, a relatively minor company, has a real face commissioned for the Pre.
But Apple's new typeface is just a tweak of Bitstream Vera Sans Mono, Linux's open source monospace sans?