It is "stunning" to behold. The amount of clouds and variety. The quality of the fog and mist is very good. Each of the programs have elements that make them stand out, and I can't really warm up to the Opus GUI. But I found some menu options in FSX for Opus, so at least I can turn it on (or off). I haven't really used ASE much since I bought it. It's probably Ok, but I have alot of other things going on already in my "virtual life".
I found myself turning Opus off while I fly Air Hauler, because it's a waste during time compression flights. The clouds hog resources, and obscure my vision. But when I flightsee low and slow it is beautiful eye candy.
What was the question?? Opus is certainly easier to use than the other two.