Been thinking of adding a MBA to go along with my awesome Sandybridge 17" MBP. I really don't like the iPad I picked up recently. It kinda sucks for anything other than movies and web browsing and even there I'd prefer a laptop (for web browsing) That led me to look at the 13" MBP and the 13" MBA. I have to say the 13" MBA seems to be a price performance leader here. While the MBPs have higher clocked dual core chips this speed bump doesn't seem like a significant performance difference The MBA offers better resolution than the cMBp 13", in a much smaller lighter more portable package While the rMBP provides superior resolution to the air and a light and thin form factor, it still doesn't best the air in portability and it's high resolution display will likely come at a penalty in ultimate graphic performance. Not to mention it cost several hundred more than the MBA Just my thoughts here.