I currently have Photoshop CS, and am looking at potentially upgrading to CS3, but I would like to know if Illustrator might be a better package to work with.

Obviously I use Photoshop to do maps with, but I am also looking for something that I can use for work. I work at a church and am looking at doing graphics for Powerpoint and website.

Should I stick with Photoshop or go to Illustrator, or should I (gulp$$$$) buy both?