Hi Chipp, Stefan and everyone.

I'm not a "professional" user and I simply play with 3D-Coat for my hobby and I'm still learning it,
and only for a limited period, some months, I played with some trial versions of ZBrush.

IMHO the matter is quite straightforward :

1) ZBrush : High selling price, exceptional tools for very skilled people, very difficult learning curve, state of the art sculpting tools.

2) 3D-Coat : less than half the price of Z, more intuitive UI, not so difficult to learn, not so good as Z for scultpting but very good Surafce tools, very very good texturing/uving/retopo, very simple but useful built in PBR renderer, easy export to many rendering software.

Both software are great but for me 3D-Coat is more easy and fun.

Ciao!

Marco (mkdm)