I am looking for advice on what MacBook Pro I should invest into. I will be using it to create various types of music, as well as music videos for said music. should I get the 13 inch 2015 retina or the 15 inch 2015 retina? or maybe I should wait for a 2016 model... also what base model of the 13 or 15 inch model would you recommend... thanks for your help. I am aware that a desktop would most likely be better, but as I am always on the road I will need a laptop to accompany me so I can work wherever I may need to go.