Dash is fork of bitcoin with modest privacy improves and relying on centralize tech partialy...

ZEN is not a fork of Dash, it started initialy as a fork or zClassic wich is a fork of zCash..

The question is Zen is not a "Coin".. It´s a platform, it includes messaging, secure nodes (not the regular master nodes), and many innovative ideas to even let it work under a gobernamental banning of their blockchain...

Its team include founders of zCash and exworkers or military industry and Nasa.... get "Palm beach confidential" report for November and read why they pick it as the best privazy token for the future (yes it´s still on development)