I just bought myself a 15" rMBP - I was tossing up between this and the high end utimate Air - but went for this because it's the same cash for a much more powerful machine.. I'm not sure if I'll keep it though because I love the Air's form factor. I edit video and photos.. So.. I'm playing with the display settings and actually like using the laptop with the 'more screen' setting - it's small but it works so much better for Final Cut and Aperture. I don't know though if I've totally negated the point of getting the rMBP over the standard one - or even the Air (power aside) So to get the best out of this machine should I be always running in 'best for retina' or change around depending on the applications I'm using? I have looked around the forums - didn't see a concise answer to this - so please dont flame me and tell me to 'search' Cheers!