Would anyone recommend replacing the stock 320 HD on a new MacPro? I have heard that the 7200 rpm isn't impressive and for a few hundred on a faster drive (10,000 rpm at least) would it improve things enough to justify? I am ordering my new machine soon and was curious. If the answer is yes, what recommendations do you have. I would simply put the 320 in one of the bays. I am mostly concerned with operation speeds for the system, start up, programs, etc. WD 150gb WD1500ADFD SATA150 16mb 10,000rpm (bare drive) - WD site says that you can't use it with a Mac. Is that even possible? Maybe their formatting and utilities aren't Mac and that's why they say no. But from a technology perspective SATA is SATA? Thanks in advance.