Final Round, Final Vote.

Scythe is the best book of the bunch.

It is the book that I recommend to the most students.  It is the book I see the most students reading.  It is the book I most enjoyed, and the one my students enjoyed too.

The others are good, but Scythe gets my vote because it is accessible and engaging.  I found it an innovative perspective on technology, and the characters were not satisfied being victims of their circumstance.