tjwett said:i can't give very good opinions about GIMP because the process of getting it running will overshadow and bias any rational thought i might have. i appreciate the UNIX underpinnngs of OS X. but much like a snow storm (or a car accident), i prefer to watch from a distance. you gotta install and configure X11. and then compile and install GIMP.
Have you ever tried Gimp.app? It is precompiled for (PPC) Macs, so it will run like any other app, assuming you have X11 installed. And as for installing X11...I have always just installed it from the OS X DVD, which was also didn't take any more effort than installing any other program (i.e. no compiling or configuring it).
As for GIMP vs. Photoshop...well, it's hard to complain about GIMP cause it's free and generally you can do most of the important things that you can in Photoshop. But Photoshop is way smoother in general.