13" rMBP is a disappointment - IMHO. Thinking of getting MBA instead (my first Mac). Not sure what configuration I should go for - primarily to get 3-4 good performance years out of it. Here are the options: - upgrade base to i7 and 8gb ram ~ $1699 - upgrade base to i7 only ~ $1599 - upgrade base to 8gb ram only ~ $1299 - don't upgrade and get 4gb w/ i5 base (as it may be an obsolete in 3 years) ~ $1199 PS: I don't plan to play games, I would be using it for studying and general computing, browsing, etc. though I had heard that the new OSX was causing some lag in certain MacBooks.