graphics card upgrade

I think I'm in need of a graphic card upgrade. Currently, I am using a Mac G4 dual 1.25 with 2GB of memory. I'm operating with panther OS 10.3.9. My machine has a Radeon 9000 Pro 64 MB card in it. That card allows for dual monitor set up. As I said, I think I need another card, so I might as well improve my system too. What recommendations would anyone offer. I've been looking at the Radeon 9600 Pro Mac but have also considered the 9800 Pro Mac. I do some 3d modeling as well as graphic work with Illustrator and Photoshop. I am not a game player. Recommendations will be welcomed.Thank you.

I have the ATI Radeon 9800 Pro SE (AGP model with 256MB) and I love it.

Any preference between ATI or NVIDIA? Are you looking to add a second video card to a PCI slot, or replace the one you have?

C