Feature wise OS X is still fine. You can run everything as long as you unlock it manually, which I find actually valuable since most users should not use unsigned applications. I also trust the software more than Windows (still far less than Linux). Unlike Microsoft, Apple recently stood up for the user's privacy. DRM is still mostly a problem that you can control by buying DRM free. The key point will be stability. Yosemite is a mess. If they fix that it'll be fine.
