I Like Ulead PhotoImpact. It has many templates for the image editing which made it very simple to use. Many features like removing marks on the face etc, inbuilt textures to apply for text, and frames etc makes it very powerful and easy to use photoediting software.
After this I like photoshop very much. I use photoshop for making logos and compressing images.
Most of the time I combine these two to edit an image.