Hi there,
I agree, stick with Blender until you can make something complex without following a tutorial. I purchased a copy ZBrush Core and I was quite disappointed with it, for me it was even more difficult to learn than Blender initially and in addition the Core version is very stripped down in terms of features compared to the full version. In the end I stuck to Blender and with more of the sculpt branch being merged into master it is becoming closer and closer to ZBrush.
Ciao!
