Used PC up until 6 months ago. Switched to mac. I am fine on both, but prefer mac. It inspires my creativity, and there seems to be much less headache. As for people telling you you'll need a PC for testing, that's not entirely true. Purchase Parallels and do your testing on there. I start up windows on my mac using Parallels and test for IE 5.5, 6, 7, Opera etc... on PC. Works great.