I use all three depending on my needs. Probably Propack the most often, unless I need animated textures or dynamics. It's still much faster rendering with Propack, though I dream of the day when I can give it up for an updated library structure like P5 P6...They need to either go with a plugin architecture where you can turn off dynamics and all the other rooms when they do P7, or maybe make a P7 LE that is basically a trumped up Propack with a few updates. Anyway, I know that's not what this thread is about, so I'll save it for EF ;-)