I have to admit, I've never used a Mac, ever, but I'm thinking of taking a look. Years ago they were known for having less system-level access then PC's, so they were harder to tweak and configure, but Windows has, sadly, with each successive release further dumbed down its interface. For example, there's a heck of a lot I can do with batch files that I can't do with out-of-the-box XP, unless I patch in a different command-line command processor. (I prefer an old version of 4Dos that I have, but it gives XP conniptions on some things)
So, I now wonder about MAcs... I'll at least take a look at the newer ones, though I suspect price will keep me away. I also don't like the hardware issues; for one thing, I always build my own desktop systems, and I've heard that you just can't get the parts to customize Macs that easily.