King,
Your work shown on that thread looks great -- that's what I wanted to achieve. After researching advice from Oshyan regarding how cloud settings operate, I found that my guess at keeping the sampling rate high was a mistake. Very low edge sharpness settings (0.03 in my case) create the correct fractal wispiness of cloud structure for impressive photorealism.
I'm glad I'm taming this TG2 beast, the results appear stunning.
Here's my 2nd go at it, muchly improved:
[attachthumb=#]