Hi all I am new here but first off would like to thank you all for the useful info on here. I will be purchasing my first MBP ever as I am going into my freshmen year at college. I am looking at the 15" RMBP, but I will be buying from Macmall since it is cheaper and they have the accidental damage warranty. I can't decide between the 2.7GHZ 768GB for $2,620, the 2.7GHZ 512GB for $2,570, the 2.8GHZ 512GB for $2,940, or the 2.8GHZ 768GB for $3,330. I am looking for the best buy here as making 8 bucks an hour has taken me forever but I definitely need this for school. If you could voice your input on what you think is the best buy for the money and if the money for the step up to a 2.8GHZ processor is worth the money. I was also looking at a Seagate 1-3TB external HDD for little over 100 bucks so keep that in mind. Thank you!