# PC or Mac fonts?

In buying fonts, is there any particular reason to buy Mac fonts? PC fonts appear to work fine on OS X, and \*.ttf files are much better supported by various open source packages. (e.g. Ghostscript, FreeType.)

(Fonts bought: <a href="http://cape-arcona.com/sites/fonts/font_airespro.html">CA Aires</a>, <a href="http://p22.com/products/london.html">P22's Underground</a>.)