See the S790 thread. There is an apparent unfixed defect in default 'Auto' color output setting. Once I set the Picture Quality Mode to 'Direct' and the color to output 4:2:2, the image was excellent - a little better than the S1. I've decided to keep the S790, as it loads super duper fast and the operation is quick and smooth. Whether the picture quality is better than the S5000ES, I don't know since I don't have it to compare.