Hi everyone! I would like to ask something. I have some question, so please help me. I'm ordering MBP 13", 2.66GHz, 4GB ram,... 320GB hard drive with 'only' 5200RPM. So.. What is the difference between 320GB with 5200RPM and 7200RPM. How much is reflected in the speed? How is it with these memory (8GB) - quality performance? Thanks for help!