I am finally going to buy a new MBP with this update today, but am struggling to decide between the 750gb 5400rpm or 500gb 7200rpm HDD. I would have gotten SSD if i had the money, but i need to save up first. I plan on using the mbp for gaming, movies, and music, so could use a faster hdd, but i also generally store the files on my computer. Which one should i choose???