I'm also thinking about getting a MacBook. The screen is a little bit smaller than what I prefer, but the larger MacBook Pro is quite a bit more expensive. What I like about the idea is that I'd still be able to do the things I already do, and the OS is resistant to viruses (though not as immune as some people believe, according to my readings). I am also trying to figure out if it's more reliable, less likely to become outdated, more likely to last, etc.
I've been asking for feedback from friends. I use a Mac at work and have used them at school, and I never noticed many problems; but some people on my friends list said they misbehave as much as Windows and they are harder to fix when something goes wrong.
I also thought about Linux, but I doubt that I'd be able to get it to work with all of my tasks/files. I used to use Linux, and I found it difficult to fix when something went wrong, which something often did. I guess I'm just not enough of a geek. :P
So what do you guys think? Would you go with an XP laptop or a MacBook? Any experiences or opinions to share?