P6 is a better beast than P5 but still has it's little temper tantrums (like P5 had some),But is it worth the upgrade? OOHHHH YES WHY? OpenGL support - which means you get to use your graphics card on the preview window Ambient Occlusion and Image Base Lighting 2 New lights (Point and IBL) Nice library display and much more....

Getting old and still making "art" without soiling myself, now that's success.