im kinda new to making them i took a photoshop intro class in highschool and did very well.

just wondering what is best to use AKA not the most difficult

i have been thinking either photo shopcs6 or Gimp

any suggestions?

Photoshop...

if you're new to this and planning on following tutorials and the like, i'd advice photoshop, simply because most tutorials you are going to find are going to be based off photoshop and will assume that's what you're using too.

Photoshop for backgrounds, renders, effects.
Illustrator for text. Almost everyone's signatures look ugly because they did the text in photoshop - FOR SHAME!