Kromekat, If you are purchasing purely for OSX compat., save your money. It is very quirky running under X. And yes it is slower, and I belive mainly because Bryce5 does not play like it should with Dual Processors and G4 optimizations. By supporting Velocity and dual processors they could have easily given a 75-100% decrease in rendering times. Oh well, I will continue to run it in OS 9. Here's hoping they get it right in Bryce 6! As for it being written for OS X, well that is a matter of debate as it is Carbonized. Basically this means that it was made comaptiable with OS X to take advantage of what X has to offer. If they really want a speed gain they may have to totally rewrite it using Cocoa, which is 100% native X. PAGZone