Thanks to a first class execution the HP spectre x360 13-inch model is the mini-me of it's head turning 15-inch sister.
It has an excellent keyboard without the layout gaps of the yoga 910.
Plus it doesn't make the connection compromises.
It has two full capability USB-C Thunderbolt ports in addition to the single USB-3.1 Type A.
Which can charge your devices while the laptop's powered off.
You do lose the SD card slot and the HDMI connection in the 15 to 13 inch downsize, but that's par for the course.
And it comes with a pleather sleeve, which has a slot for the bundled active pen.
It's a nice perk if not as pretty as the system.
Of course the first question you have to ask yourself when considering either system would be, do I really want such a small 4K display?
I find more pixels are better because it makes the interface sharper and allows for better zooming into photos.
But your mileage may vary.
Plus the 4K model we tested comes with two big trade offs, battery life and price.
It's battery life tests out to about 14% shorter than the close to identical HD model we tested this fall.
Dropping from about 9.5 hours to 8. As for price at $1600 you're paying a $250 premium for the 4k beauty.
I find the size is more comfortable to use as a tablet than the larger model.
The hinge has good tension and though Everett complains position of the speakers when in tent mode, I have no problems hearing the audio while streaming video all night that way.
Windows did seem to get stuck in Tablet mode more than I like, but that's an easy fix.