AS's #23 is the only post that I think really reveals the issue. To ray trace at a certain amount of accuracy or detail is a finite task. To me, it seems, no matter the name of the software to perform the same task at a given accuracy will require the same amount of time. Hence cpu power and clock speeds are the only real variables when comparing apples to apples and oranges to oranges. Other issues like tree creation and abilities to do simulate various lighting situations is code files. You either have it or not. If you favor the "haves" it'll cost you. Nothing is free. I'll have Bryce a long, long time. It's the best for the money in my opinion. Willie, (the hobbyist and knows that is all he'll ever be)