Just picked up a space gray M5. I had previously been using a 13 inch rMBP from 2014 with a i5 processor. I feel completely at home with this machine after only an hour. The keyboard takes about 10 minutes to get used to. Beautiful screen. Also got a Mouse 2 and the Apple 3 port plug in. My rMBP goes on Swappa tomorrow!! The space gray M5 was a refurb from Apple. Looked new to me!! Just checked the battery cycles and it was 5!!! Pretty new!!!