Okay, so I finally took the plunge to get Final Cut Studio. I've been working off express for awhile now, but needed Motion and Soundtrack. I have a few things I'm looking to get to help the system work better: 1) External Hard Drive for Scratch Disc Can't decide between a USB 2.0 and FW800 HD, Money is an issue so i'm curious if you all have tried using a usb 2.0 as a scratch disc. 2) Additional 4GB RAM to help run motion Which route will I see a better improvement on initially? I don't have money for both upgrades. The projects I create are normally just 2-5 minute HD product overviews, nothing too intensive. Currently my system is the iMac 27" Quad-Core i5 2.66, 4GB RAM, 1TB Hard Drive.