I decided to ditch my old windows notebook (an ancient hp pavillon) and treat myself with a new macbook. Being a newbie in the mac world, I can't decide which one is the best option for me. The 13 inches rMBP would be the better option (financially), but coming from a 17 inches laptop i fear i could find such a screen size a bit too small, considering I use my laptop not only for work but also for watching movies, streaming etc. On the other hand, i could only afford -barely-the lower version of the 15 inches laptop with the iris pro graphic. Do you think this version offers an acceptable price/quality balance? Is it really portable? Another question..i read that the rMBP line should be soon updated with new and more powerful processors..should i wait to buy? Should I expect major design changes with the next update? Thank you for your help!