Best Graphic Design Software You Like To Use?

It really depends on what you want. The best thing you can do is to mix your work between many programs. Photoshop is cool for editing, but I'm telling you, if your idea is to illustrate, then Illustrator should be the first option. On the other hand, someone who doesn't like Illustrator's overly complicated color management could actually use Paint Tool SAI. Worst quality, but more user-friendly. For illustrations though, the best thing is to have a screen-display tablet, like a Cintiq. Although it's not cheap at all. A Samsung Galaxy Tab with S Pen woudl do better. Anyways, It all depends on your actual needs.