If you are thinking of becoming a content creator for Poser I would stick with a Windows machine, many (Many!) 3rd party plug-ins and utility apps for editing Poser files etc. are windows only. The list is quite comprehensive. Of course you can run some of these with hardware virtualization. I'm a long time Mac user who does most of his Posering on an old souped up pre intel mac, getting ready to purchase a decent windows machine so that I can join the prominant Poser throng (and, hell, the 21st century for that matter).

The one advantage I've gained by being in the Mac margins is the ability to dig around inside Poser files with a text editor rather than relying on an automated solution via a dedicated app. Also my Mac has been running for over a decade with nary a hiccup, something you don't see often with Windows machines. Sigh.

Again, Poser is Very Much a windows-centric app in that so many community focused indie developers choose to utilize windows as the platform for their creations. More so than any other 3d art tool in my collection...

Love Macs, just not with Poser.