Hi, Has anyone used the ATI 4870 with the MacPro using Maya 2008 / 2009? How about the 4850 on the iMac? I mean really use it, long hours, enough complexity, for work, freelance... etc. and various aspects of the program with these hardware.. What are your experiences with it so far? Are the drivers stable? Do you get any display glitches or artifacts? Viewport refresh / display problems? How is the real world performance? My main concern is I have had really bad experiences with ATI cards (non pro level) on the Mac or PC in the past with any 3D applications, their opengl drivers in the past was really terrible and I always get viewport glitches, things don't redraw correctly, objects would disappear in the viewport when they are still in the scene, wireframes not displaying correctly or have massive slowdowns... etc. From seeing different posts here and there, seems the new ATI cards are fine. Just want to confirm this with other experience users before making my decision on buying. Thanks.