As you say the 10k drives are much much more expensive than the 7,200rpm versions and if you can capture, edit and run off finished movies using the 7,200rpm then go for them instead. The question I've always wanted to ask is, does it matter if the drive has a 4Mb or 8Mb cache or can you get bigger than 8Mb now? Or does it really matter if you are using SATA set to it's highest data transfer rate.

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