Does anybody have any advice on Intel Mac video cards for use with Jitter and related GPU/OpenGL work? Apple offers three configs. It seems clear that the step up from stock GeForce 7300GT to Radeon X1900 XT is a no-brainer. Does anybody know what if any Jitter/GPU/OpenGL benefits there are to spending the extra $1695 for the Nvidia Quadro FX 4500? Any advice on these or other video cards for the new Intel Macs would be greatly appreciated.