Thanks for the great review, up to NBC's usual level of depth and care.
I must confess, I'm writing this in order to make a request/plea:
**Please, please review the 2017 refreshed version of the HP Spectre x360 that came out in February of this year. It leapfrogs the November 2016 refresh in two very important ways:
1) Now supports pen (and includes one N/C) Ntrig, same tech as Surface Pro 4 (whose pen it can also use)
2) Available with 4k screen - previously only FHD
I have read conflicting things about this device:
1) battery life with FHD screen claims range from 7 hrs to 10 hrs
2) no reviews of this device with 4k screen, but owner reviews suggest battery life may be 40% worse than w/FHD, ie, under 5 hrs! Screen said to be absolutely gorgeous, but I want NBC measurements of both screen and battery life of the 4k model. This is long overdue. You have reviewed the 15" version, but that has a much, much larger battery: 80 mwh vs. 57 in the 13 incher.
3) Very confusing mixed reporting on SSD (Nvme/PCie): Sequential R/W as high as 3,000/2,000 (Crystal Disk Mark) and as "low" as 1200/900. Also, 4k read speeds ranging from 36mb/s to 49 mb/s. Seems the models with 4k screens get a faster SSD
Thank you so much for being responsive! Notebookcheck rocks!!