Quote - Have you convertred them to mesh yet or are you still rendering the actual boolean construction?

I didn't know there was a way to do that. That would explain the render times. How do you convert them to mesh?

Quote - Selected quotes from V5I manual (p135):
Since I don't publish and don't do animations, I never use anything above Final:-))

I like the smoothness and fine detail that ultra gives. It probably has to do with the loads of antialiasing passes. As much as the manual says there is little difference, it is there. Since I'm only rendering at 800x450, this usually is not more than a few hour process. I have found myself using the new Superior setting in 5 more though, because it renders a lot faster but still has high-quality and is a good compromise for those really complicated renders.