I'm thinking about buying the mini 2.26 ghz 160 gb, and adding a 1 TB My Book Studio. I will mainly be doing school work, web surfing and music downloading. My question is: Is this a good set up or should I go with the 2.53 320 gb? Why or why not? The reasoning for buying the 2.26 ghz is because I can buy it sooner, were if I buy the 2.53 ghz I will have to wait a few months. I'm running a HP Pavilion now, will I notice any difference in speed?