I'm thinking about buying a 15 inch Macbook retina. I love the crisp, pristine quality of images on the screen. I have a bunch of movies and tv shows that I bought on itunes in standard definition quality instead of HD because I am a cheapskate and wanted to save $10- $15. If I play movies and tv episodes in standard quality on a Macbook retina, will the quality be pixelated and nasty looking? Or will I get that crisp look that I so desire? I apologize if this has been asked already. I asked an employee at an Apple store and he could not answer my question. Thank you for reading.