I have Xfrog 3.5 lite. The new version of Xfrog will be a plug-in for Cinema 4D. They are offering an upgrade to Cinema 4D and XFrog 4 for $599. They also are offering the bundle with advanced rendering for $799. My questions... Is the advanced rendering worth the extra money? If I want DOF, can I import to Bryce? How steep is the learing curve for Cinema 4D? Does it have decent documentations and tutorials? What other add-ons to Cinema 4D are "must haves"? That is one of the things that has kept me from going to these "high end" programs. You buy it, then find out you have to spend hundreds more to get it to do what good ol Bryce can do for $79. Thanks! Peggy

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