moneyshot,
Yes, Apple has left the 3D Artist out to dry. I run Maya 2009 on my 2008 Mac Pro with 8800GT and the performance is pathetic. The card was sold as being "ideal graphics performance for animation and 3D work"
I've given up with Maya on the Mac, it's slow, and Apple's lack of proper drivers do not help.
Don't bother with the Quadro under OS X, 90% of the card's features do not work under OS X because the nVIDIA (Apple) Drivers are under-developed. You're only going to waste more money on a doorstop.
Either try and get Windows running or install Fedora / Ubuntu. At least they have proper nVIDIA driver support. I'm installing Ubuntu this weekened for the sole purpose of running Maya. You can always dual boot for Shake / FCP.
I can say that Windows XP SP2 64bit works great on the Mac, with an upgrade to SP3. You have to disable Aero under Vista in any case for Maya's viewports to work properly.
If you want to buy a card that is slightly better than the 8800GT, get the ATI 4870, it has better OpenGL support under OS X. But it's still not perfect for Maya, better, but not perfect.
OR
Hang on until the next release of Maya, which apparently is being re-written for the Mac. Seems like they're getting rid of old legacy code. But new release = more bugs...!
Best of luck.
Jacques
Message was edited by: Jacques Toerien