Mac programs used to come out first, but when there's such a market share difference between Mac and Wintel sales, you have to write for the market. It used to be that Macs were more powerful than PC's (the old DOS limitations), but now with the NT based Windows op systems, open GL (which doesn't apply to Poser), and cheap memory, PCs are as powerful, if not more powerful than the Macs. Most graphics software was written for the Mac first, since the graphics/rendering engines on them was so superior. Not anymore though. I'd love to have a Mac, but they cost too much for me to have one as a toy. And it'd have to be just a toy, since 99% of the contracts for business programming are for PC based systems. One piece of advice to Mac users: wait 2 weeks after the release of P5 on the Mac to buy it. Most of the bugs will show up in the first 2 weeks, and you can decide then whether or not you want to live with them. Remember CL has a no returns policy.