So I have an early 2014 MacBook Air 13". I recently used a retina Pro and was impressed by the sharpness, and I am now slightly considering an upgrade to a 13" Pro. I would be getting a refurb, probably a 2013 or 2014 one, (would that be a bad idea to go 3 years back?) Also, I don't use my Mac too often, I mainly use my iPad Air 2. My main use on my MacBook is storing photos and videos, and other files; and video editing in iMovie for my YouTube channel. I do this twice a month or so and performance is fine for me on the air. So I really don't need the extra performance of the pro, I just like the retina screen. Would it be worth it in this case?