For the most part I enjoy working on my Mac, mostly for its unfettered shell access, day to day apps (iCal, Mail) and timesaving graces like LaunchBar (just turned my PC back on last week after a month-long haitus. That being said, for some tasks (image processing, ripping/encoding) there’s just no comparison. Also, I’m not a huge iTunes fan (WinAmp any day of the week), and there’s just nothing on OS X on par w/ Trillian or TopStyle.