So, i just got a mac pro- specs: Quad Core 2.66 Processor 6 gigs of RAM ATI Radeon X1900XT Graphics Card OS: Tiger . . . I will be using Final Cut Studio 2 / After Effects A LOT on the machine. I have heard some things that FCS-2 runs slower and doesn't perform as well in a general saying in Leopard. Is this true? Has anyone had any personal experience with this? i would love to find out before i go out and buy the new Leopard OS- or if i should keep Tiger on it.