I have a Mid 2007 MacBook Pro 2.2GHz. I am very envious of the new upgraded macbook pros. But as they look ascetically better, are they really that much better speed wise? Or am I just going crazy. I upgraded my current mid 2007 MBP with 4GB ram, 320GB 7200rpm HD. So my 2.2MBP is pretty well stacked. But how does it stack up against the new MBP's?