At first I liked the pcs 'cause you can configure and tweak everything in it. Yeah well, that was when I had nothing important to do with my computer. Now that I work in a university I need my computer to actually work and I do not want to be looking for hours for a .dll or to solve some incompability.
Anyway, my toshiba laptop died one day, just like it (hard drive and cooling system) and I could discard a 2 years-old laptop I had paid $2700!
So I bought a powerbook... It just changed everything. It just works! It's pretty, it's fast, it's just perfect. Two years and yet not bug. I won't go further into my panegyric, but I just get everybody around to switch as I'm tired of fixing their constant problems.
Now, after 10 years of pc, I'm just a total mac addict.