Okay, so I made the plunge for CS4, the primary reason being that I wanted to shorten my RAW workflow, and CS2 didn't take RAWs from my Camera (A700). Now I'm glad I can process RAWs immediately through photoshop, but I'm also interested in trying some of the new features, seeing how this has been improved, and everything looks to perform pretty much the same. What am I missing? What new and cool things can I do that I couldn't do in 2? And finally, what is this 3D thing, does that have any function for printed photography, or just 3D mapping? Thanks