I am about to purchase a Mac Pro, and I saw the rumor about the new ATI Radeon 3870 coming for the Mac Pro in late May. I had a few questions about it and Mac Pro graphics cards in general. First, will this card be available as an optional upgrade when configuring a Mac Pro from the Apple Store? Is that usually how it goes? Secondly, I'm a video editor planning to use this Mac Pro primarily for Final Cut Studio and After Effects. It seems to have been indicated that ATI cards are better for this sort of work, versus the 8800GT they off right now. Do these programs gain significant benefit from using ATI or is it more unsubstantial? The other question I have is whether or not these cards would be recommended for use with the Avid product line (namely Avid Xpress Pro or Media Composer). It seems that Avid only will certify NVidia graphics cards, as it has with the 8800GT. I also am aware that Avid is not compatible with Leopard just yet, but will be in the near future. So does anyone know if Avid performs well (or at all) with the ATI cards? Would the overall performance increase of ATI over NVidia be enough to take a chance with compatability issues? Thanks for any advice you can offer!