Sarsifus, UberEnvironment2 is included in DAZ Studio 4…no additional purchase or download is necessary. (On an unrelated note, the same is true of the Elite Human Surface Shader…for a while I didn’t know that).
Thanks for this thread! I’m just noticing it now, but I’m finding it very informative. I never really understood what UE2 was, even though I’ve used it many times through purchased lighting presets. It may not be as good as Reality, but UE2 can yield some really spectacular results that are well worth the render time.