Hey, I've got a beefed up 2015 Macbook Pro 15 which performs great for what I do but I'm looking to purchase a second macbook for my girlfriends you tube requirements. We'd be buying new and I am just wondering what the 13"MBP's are like and also the lesser models (AIR?) for YouTube Creators. What's the render time like on a base 13"? My 15" exports 1 gigabyte in approx 15 minutes.