The core-i3 7100U is fantastic.  The unit is solid and easy to work with.  The Intel BIOS has a nice GUI.  The only thing which dings the review stars are some HDMI compatibility issues with my older HDMI 1.2a receiver which I have worked around using Linux 4.9.50 + some i915 backports.  Beware of Logitech universal receiver USB 2.0 wireless keyboards, there is some interference with the USB 3.0 ports.  I had to use a very long cable between the NUC and the receiver.  Only connecting to a 1080p display.