I'm after superior performance and wanted to get 4 x WD 2TB RE4 for a Raid 0 set up as I was told this is the best performance I can get. I'm standing here in the computer shop and they say they don't have any RE4 (or will they ever be available in Hong Kong), only the RE4-GP. So, considering I'm after performance, should I get the Caviar Black 2TB or the RE4-GP? Cheers!! (for use in a '09 4.1 MacPro, apple raid card and 8GB ram, all apple standard). edit They've let me use the internet to search some results and between the Caviar Black and Green, the black seems to win hands down. I don't think they are testing in a raid configuration, but suspect the difference between the Caviar Black and RE4-GP would be similar. I'll wait a bit wander around the shops and see if anyone here has any suggestions... Thanks again!