I use Adobe Creative Suite CS2 as well as Macromedia Studio 8. I use both on a PC. But the fact that they all begin to run pretty slow after you use them a while is REALLY pushing me to try a Mac at some point. Not until I get enough money and not until I try Windows Vista, but I wouldn't have even CONSEDERED it before I got into heavy design stuff. I mean, when you drop 2 grand on design software, you sure as heck want a computer to run it all REALLY fast.