GIMP is also a good program to do graphics design and sometimes i find it easier to use than Photoshop
My all time favorite graphic design software would be Photoshop, a good freeware version would be Gimp
adobe creative suite 4 is the best software bundle for graphic and web design . it includes all the software needed for web design and development . the software included are : Adobe Dreamweaver CS4 Adobe Photoshop CS4 Extended Adobe Flash CS4 Professional Adobe Illustrator CS4 Adobe InDesign CS4 Adobe Acrobat 8 Professional
1 software is not best for all works. If you want to design your logo illurtratorn will be best and for editing picture photoshop will be best.