I love and hate Z-Brush at the same time. I've found you have to think very differently to use it. Which is fine if that's all you use. But when I was deep into Z-Brush, I couldn't use Bryce or Painter 'cause my head had changed. But it's truly a great program and incredibly fun to use and play around with. However last October when daylight savings went off it hosed my registration for the last time for me. I haven't touched it since.