Im thinking of not ordering the 27" because of the wait 3-4 is alot specially since ill be writing papers. So im thinking i should get rMBP 15". I'm wondering how you guys like it so far, performance wise. Can it take on lots of app at the same time like a champ? i heard it can power 3 displays, any lag i should know about? Thank you and is 8GB/16GB of Ram enough for you?