Well, I have anim8or from around 1997, Hexagon, and Blender. With a sideslip to Wings from time to time.

Need years to master them all. Ha-ha-; months to look at all "tube-you-me-and us-all" tutorials. LOL. And al that is also valuable "hobby" time.

Zbrush can perhaps do "more" and "more" to be taken with salt and pepper, throw in some mustard. LOL.

But also at the cost of dollars and "more" free hobby time.

Hey, I also fly model airplanes, and a little heli from time to time. LOL.

Zbrush would be great for prof. content creators, agreed.

What I do is set a goal.
Then look for the road "how" to get there.
From what I have seen so far : Mudbox and Zbrush could do it all, but so can all the others.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!