Sometimes, you just have to spend a little more. Quality of life is important, and I know there are hardcore Windows users out there, but occasionally you just have to spend a little more to get something that just works. About 6 years ago I switched to using Apple computers and I never looked back. I even convinced my mom to go Apple, as she was always calling with problems with her Windows machine. Since she switched about a year ago, neither of her Macs have crashed and she barely ever calls me for help with it. My wife, who had never used an Apple before meeting me, cannot imagine going back to Windows machines. We have 2 in our house and I can do everything I need to do on them, whether it is doing business stuff, video editing, creative work, etc. I have never come across something on my computers that I could not do because I did not have Windows.
Anyway, I know it is not directly related to personal finance, but I think buying the best machine is a worthwhile expense, and for us, that was switching to Apple computers. They might be a little more expensive in the short term, but I would never go back.
If you were looking for some reasons on why to switch, I came across this post over at Valleywag.com that could help you with your decision!