While I am not buying the top 2 in the line, I like to get the Dual 2.26 Quad-core. I do a lot of 3d (modo, Maya, Zbrush and Lightwave) and some compositing (in AE) and of course, Final Cut for editing but I can't afford the top of the line. My main app does work with all cores and is even hyperthreaded to take in account of the awesomeness of the mac pro's CPUs. But I heard from somebody that since Intel has already release the 5500-series 3.2 GHz Quad-core Xeon, a speed bump should be coming. If that happens, the 2.66 8-core machine will be the lowest. Should I wait? There's no hurry for me to buy till the end of August at this point.