The Air gets its own section and only has 2 trims, and there are quite a few difference in the Pro and Pro Retina. I have seen a few threads were people are not clear on what machine is being spoken of, or ends up giving advice that does not apply. Personally I don't get why the Retina can not have it's own section. Would anyone else like to see it split out just to ease some confusion? Just asking, not trying to start a flame war.