I am looking into getting a processor upgrade for a B&W G3. I am stuck between a PowerLogix G3 900Mhz and a Sonnet G4 500Mhz. One of my biggest concerns is the lack of AltiVec in the G3. I will be using Panther and various apps like Illustrator, PhotoShop, Quark, ect... Which processor will give me the best performance? I already have a gig or RAM and am wondering if I need to update my video card also. What do you think?