well, i was holding out for the 13" retina to see if they would have 16gb ram as an option. but it look like its a no go. so either a 13" retina <--- more portable 2.9GHz i7 <--- "DUAL" core 8GB ram 256GB ssd ..... for $2079 or 15" retina <--- more screen space 2.7GHz i7 <--- "QUAD" core 16GB ram NVIDIA GeForce GT 650M <--- better graphics performance 256GB ssd ..... for $2504 for the difference of $425 for the better specs, but loosing portability that's the educational pricing. so it look to me the 15" in is a better buy and more beneficial. the only benefit of the 13" is the smaller size, but "very" cripple in feature and performance compare to the 15". look like the 15" is more "PRO" than the 13", which is more like an air with a retina screen and without an ultra low voltage cpu. oh well, look like i'm going to start to roll dices with the 15" now. though, it was still a worthwhile wait to make sure.