Hello, I want to start editing HD videos but my PC isn't enough for it so I want to buy a macbook to start editing with no problems! My problem is that I was told that the minimum screen size to edit video would be the 15" inches and that the 13" would be too small. The problem is that the only Macbook pro with 15" available new at a store costs about 1800 / 2400$ (In Portugal) , because it's an i7. And it's really hard to find a used 15" inches with an i5. Do you agree that 13" wouldn't be enough? I must say I will be doing a nature documentary in a few months and I really want to start editing more videos. Thank you in advance for your help!