I tested several color correction tools before I decided to stay with ColorWasher. Many of them were much more expensive but didn't manage to get such good results. Often you just need to click one of the Auto buttons and you already get useful correction. You don't even need to use the manual. It explains itself. You just need to move the mouse over a feature and a help text will appear.

For me it has been a big time saver. I don't need to fiddle with the color tools in Photoshop for minutes to achieve a more or less satisfying result. ColorWasher does it within seconds for me...