Mark Sealey has written an extensive review for MyMac.com, rating Dorico 9/10 and concluding:
Dorico is clearly the way in which complex and sophisticated music notation software is likely to develop. Its solid foundations are built on a deep and exhaustive understanding by the Steinberg team of how musicians really want to notate their compositions and arrangements.
MyMac.com Dorico Review (3 February 2017)
Dorico - Review - MyMac.com