Good on you if you bought one of these because I'm sure it'll be a great mac!
But I was really hoping for similar specs to a 15" rMBP, dual instead of quad core is a bummer and that 8gb ram limitation is a bit of a let down, so the new 2012 MAC Mini is more of a powerhorse than this pro, for less than half the price too - then again it doesn't come with a screen
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I just dont see the Retina MACBOOK PROS as portable anymore too much weight. I'm fit, push weights and this is too much weight to be bothered to carry around all day.
People go on and on about how great their 13" MBA is and I'd believe it but if you haven't tried the 11" MBA for portability then you aint lived, thats the future because when you're not at home and on the move you want small and discrete which is why this 7" iPad Mini will be a bigger hit that the original 10".
11 and 13 MBA are where the MBP form factor needs to go,hopefully moving more toward the 11" MBA size but specwise it'll be awhile before they can get more power in that form factor.