Macbook air or Macbook Pro for a first time apple laptop user/ college freshman/ possible architecture major. Retina display a must?

Hi, I am a high school graduate from Nepal, moving to US for college as a freshman. I have never owned a macbook of any kind before and currently own a HP Pavillion Dv4, so I am a bit confused about what laptop I should buy. I'm torm between Macbook Air and Macbook Pro with retina display. Does retina display make a good difference?

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