photoshop is the best but recently I have been using gimp and that is pretty good too.
i also use photoshop though i'm not that good in designing. Sometimes i just used it to edit some personal photos.
Adobe illustrator is also cool.
I use photoshop C3 to edit images....
I use Photoshop and ImageReady as Graphics Editors.
I use Adobe Photoshop as a Graphics editor. Gimp is the second similar alternative of photoshop which is easy to use.