hi guys i am pc user and i want to buy a macbook pro the for my studies. the thing is that i am so confused about the 350gb 5200rpm ATM HDD and the 350gb 7200rpm HDD. which of them should i choose ? and is it worth to spend more on the 7200rpm? or should i upgrade the RAM ? the main use is for studying but i may use it for gaming and watch movies. pls help!!!