Just received my 13" rMBP yesterday. 8/256/i7 config. Comparing it against my 2012 11" MBA 8/256/i7. I guess the big question is... is it worth it? For me (after selling my MBA) the answer is yes. It's basically a 13" MBA on speed with an incredible display and decent battery life (you will _not_ get 7 hours out of this machine... closer to 5 or 5.5). I'm using it primarily for software development and graphic design (for iOS Apps). Compile times are a bit faster, the screen real estate (I have it scaled to the highest res) is obviously larger and as many have mentioned, once you use a retina display it really is difficult to look at any other display. It's a fairly compact machine... I can still use it in cafes and on my lap comfortably (it doesn't get that hot). It's certainly no match for the 15" rMBP, but I bought this model because of it's compactness and weight. The HD 4000 with 756MB of shared RAM actually pushes things along quite nicely. I wouldn't use this with the intention of being a primary gaming machine, but as a daily ultra compact notebook, it's quite excellent (I don't use an external display, so this is what I look at all day). If you go into this purchase realizing you're an early adopter, and that the 'Pro' monicker is really because of the display, you won't be disappointed. If you're looking for something that matches the 15" in power, then yes, you'll be somewhat disappointed. It's a pricey machine, but if you're using it almost every hour of everyday like I do, it's money well spent. Feel free to ask any questions.