The difference is still very stark in my experience, but the baseline performance is already quite good with both. I am assuming that you are looking to compare

The difference is still very stark in my experience, but the baseline performance is already quite good with both. I am assuming that you are looking to compare the air with the 13" MBP, as the 15" is just way more powerful. What are you going to use it for? The 13" air has higher native resolution than the "native" 13" retina, but its CPU is significantly slower than the MBP [1]. In terms of battery life the Air is the winner, but the MBP is not far behind, nor is it much heavier. For travel and relatively standard development tasks the air is perfect. For extended desktop usage, or if i were traveling less I'd seriously consider the MBP. [1] http://www.macworld.co.uk/review/mac-laptops/which-apple-macbook-air-vs-pro-comparison-review-3481192/ http://www.macworld.co.uk/review/mac-laptops/which-apple-mac...