Hi, This is my very first post here. I'm in a dilemma as to which of the following 2 laptops to choose: 1) 13'' rMBP - the basic config with the i5 and 128 GB 2) 13'' MBA - the highest end model with the i7 and 256 GB For the price, it certainly looks like the rMBP oughtn't be worth it, as especially since it is a first-generation one and has probably been designed with Haswell in mind. But, the specs are fairly OK with me, even at the price I'm paying for them. The main two-three questions I have are as follows: a) How exactly do the i5 on the rMBP and the i7 ULV on the MBA compare in real-world scenarios? Since the rMBP has far more pixels would this mean that despite the presence of an i5 full-voltage processor, the rMBP will run slower than the MBA with its ULV i7? b) Just how much, qualitatively speaking, is the difference between the screens found in the rMBP and the Air? c) Artificial battery benchmarks, performance and graphics benchmarks appear to throw up fairly similar stats for the two models mentioned above, but I'd be most grateful if someone who's worked or studied the two models could let me know how it all translates to in real-world scenarios.