Almost 2 years ago I bought my first Apple product, an iPhone. Then I bought a MacBook. Then I bought a 24" iMac. I bought the Mini 9 for OS X ultraportability. After being a PC user for 20 years and having the associated frustrations that coincide with Windows interface experience, (i.e., virus susceptability, blue screen of death, program incompatability), I am firmly in the Mac camp. I am about to take the plunge and subscribe to Mobile Me since it syncs my contacts, calendars, bookmarks, key chains (passwords/usernames), etc. in real time. So personally, OS X meets not only my needs but it excelled my expectations. Unless your computer needs cannot be met by Apple's operating system, then the pure intuitiveness and pleasant interface is why OS X should be your operating system of choice on your Mini.