I use Painter X Oils and Bristle Brushes most often. I paint in the style of abstract expressionism, as crazy as that sounds for computer art. I mostly use it as a sketch book though for prints also. I have been having trouble with the transparency slider in that the lower the transparency the more blurred (dithered?) the image becomes. If I wish to scumble a light color over a dark I get the same problem. I keep the blend off during these proceedures. I have tried techniques using blenders like stumps but without luck. Does anyone have any suggestions?