Jim,
Thanks for posting these images. They are a great help to me in deciding which soft focus lens I will search for next.
Currently I have 9" Veritar with a faulty shutter for which I use 2 5x7 holders as a shutter, and a 12" Wollensak Series II with diffusion. I find that the diffusion for the Wollensak only moves the focus to the rear, and consequently rarely use it, I use both lenses wide open as I have enough sharp lenses to use for that type of image.