I have to decide on one notebook to keep due to cancer and divorce bills... I have a base 2015 15 inch MacBook Pro with retina display, 256GB SSD and 16 Gig of Ram. I also have a 2017 12 inch MacBook with 16 gig of ram, 512 SSD and the 1.3GHz i5... I have to sell one. They are both flawless and still under Apple Care. I only use my laptop for web browsing and office apps. I love the power of the 15 but I adore the portability of the 12. Any advice would be greatly appreciated.