Settings: Formula 37, Render 8, Color 13-2 modified, Transform arctan, Iterations 10.
When I first started using the arctan setting I only saw flat and uninteresting images. Experimenting with the color dialogs however started to produce some really incredible images like this one which renewed my interest in Sterlingware. Previously, I had found that only by leaving the Transform settings off (ie. "none") could I produce the rich photographic images of the Fractal dimension (Render 8) setting.