<You can only do that for current versions>
READ THE ORIGINAL POST – CS4 is the current version! Have you had one too many or just have a reading problem?
<Those with a brain would likely prefer Windows on this particular CS4 release.> Why do you post with a guess ("likely") for an answer? Do you really think it is reasonable for the original poster, who is apparently just getting started with CS4, to care much about 16 bit printing?
I’ve tried both platforms. Just visit your local Apple store and give it a try for yourself (for those who don’t yet own a Mac). Also, check out the new Adobe community forum. They have some great video tutorials, among other things. You may notice that virtually all of the instructors are using Macs. I guess the smart asses here would suggest that the instructors for Adobe and NAPP (including one of the PS developers) are somehow misguided Apple maggots, too. After trying out CS4 (properly installed) on both Power Mac and Mac Book Pro in our local Apple store, it truly is a no-brainer for me. More expensive yes but you get what you pay for.
John (Choy), you can also download the Mac version demo and give it a whirl on your Mac for 30 days. Obviously, you can see that the moderator and other posters are die hard Windows fans who are easily insulted by those who do not share their biased point of view. But again, try it for yourself and make your OWN INFORMED DECISION based upon what works best for you. You are fortunate enough to own both platforms so go for it!
Oh, and check the Windows forum "Photoshop CS4 is a Disaster" thread while you’re at it:
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http://www.adobeforums.com/webx/.59b6f02c/477>