So I'm considering buying a Macbook. Unsure between the Air with i7 or the Pro Retina with the i5. Both configurations have 8GB RAM and 256GB SSD. I know the benchmarks between the two. How do the real life performances of each compare and which one would you recommend? I will be studying engineering next year, and the schools software is compatible wih Mac. Which of the two would you recommend or are there any other configurations that would be better? Would like it to be below $2000 give or take a hundred. Thanks.