I keep seeing speed test that show the G5 2.5ghz is faster. Which one is it? Look here: http://www.barefeats.com/threeway.html I have also heard that the 2.7ghz model is quiter than the 2.5ghz one. Does anyone have any experience using both that can shed some light on this? I bought a 2.5ghz from Compusa for $2700 out the door and then saw the Macmall 10% off deal and thought I could get the 2.7ghz for the same price so I ordered it and am preparing to take back this 2.5ghz to compusa but now I am having second thoughts.