I need a machine that can render over night in Maya, but can also handle HD video editing in FCP and a bit of compositing in Nuke and Motion. I'm thinking about: 27" 2.93Ghz Quad imac 8Gbs Memory with a Solid State Drive 8GB Ram 3.2Ghz Quad Mac Pro 8GBs of Memory with the ATI 5870. (I'm looking at spending around 3500ish us + the extended warranty) Although the gloss screen is annoying, I'm more worried the compact imac may have heating issues with the Renders. Most of my data is kept on external drives so the extra HD bays don't phase me. How does Nehalem weigh up to the I7 ect. Any advice would be much appreciated.