Returned mine.
Didn't have an issue with the machine apart from some graphical glitches. Battery life was 9-10 hours with light use, perfect screen uniformity and keyboard was great.
However, in the end I couldn't justify paying so much for it. I instead purchased a 2015" model for £1000 cheaper.
Same experience . It's a very nice laptop and would have kept it, though not for a £1000 difference . Keeping the 2015 refurb and spending the money on a holiday