Good example how far Zbrush can go with hard surfaces
All done in Zbrush Well Zsphere 2 :
Yes it's really like adding volume in space like Voxels of 3D coat, but in 100 times more smooth and fast

That has always been the strong point of Zbrush.
And yes i can do hard surfaces in Zbrush, and more hard than
in 3D Coat !
In 3D Coat you'll have to increase resolution , and each time you can divide by two the size of brushes, or tyou can't work, too slow !!
Zbrush is a lot more complicated tool ,not as friendly as 3D Coat : but it has big big power
