I have all three light packages for sale at Daz. 1)AhEnvironment 2.0  2) UberEnvironment 3)Light dome Pro 2...after tinkering with all three for a couple of weeks ive found that AhLights are very good all around indoor and outdoor for ambient light and realism...for outdoor scenes there is nothing better than LDP2, its my favorite hands down, but its not well suited for an interior scene. Uber environment is ...well ...the cheapest of the bunch..but it seems to be pretty good for portrait work in close up shots. I recommend any of the three as good advanced light lighting pachagesl, but if I had to do it all over again and only had the $$$ for one package I would go with AhEnvironment 2.0 as the best one. Pendragon has a free package as version 1 you may want to look into, combined with the free Environment shaders and Render controls its not bad!!