I am new to Macs and am building a spec. for a non-linear edit suite using Apple goodies, but need advice from experienced users. What are the likely benefits of opting for a twin-processor G5? Is the software (Final Cut Pro, DVD Studio 2), optimised for 64 bit processors? How much RAM should I install? In this application the usual bottlenecks of Web server speed and disc read/write times are not so much of a problem, but as Gigabyte chunks of RAM are expensive how can I work out the cost per performance gain equation? If I won the lottery I would install 8Gb no problem, but would it be worth it? Is the performance gain with extra RAM linear, or does it drop off once a good chunk of RAM is available? (I expect to be editing quite long DV footage).