Hi I had pretty much decided to buy a new 13" MBA and was just working out this week if I could get away with 256GB or if I needed 512GB. In fact I know I can get away with 256GB now. I was going to get the i7 and 8gb ram upgrade. I had been holding off to buy one because of the 13" retina announcement that was due and I am in no rush for a machine. Anyway, playing devils advocate I checked out the 13" rmbp at my local apple store this weekend and I was like WOW it is so much smaller than I thought, and that screen is amazing!!! I played around on some websites for a bit. Then after that, I went straight over to the 13" MBA for a comparison and geez for the first time ever I noticed the screen was completely washed out, like someone needs to crank up the colour saturation by another 50% or something! It was very obvious after seeing the rMBP. I came away thinking, forget it, I will get the RMBP instead. But I am unsure because this is a first generation and I noticed lag scrolling the verge website, which I didn't notice on the air. I am concerned I will be disappointed with the RMBP video performance hooking up to an external display - I loath UI lag! I suppose my question is, how much can the colours on the air screen be fixed ? Anyone got any comparisons before/after calibration?