Will know more when I complete the renders. right now I'm just compiling times and images, and with GI, that eats up a lot of time, time in which I cannot use my computer. I'll post a link to the web page when I complete the renders. IMO, knowing this will be able to give us a good indication for a good balance. From what I've seen so far, the ambient in GI adds almost as much as the skylight can. The rendertimes haven't been too great a difference, but if you are rendering animations those extra seconds or so can add up to a lot of time saved over the long run. My 2c again, Ken