I just got Mudbox this weekend...... Seems a lot more intuitive than Zbrush. I was able to build the model shown after the first few hours of using the application. I know it's not "Teyon Great", but considering I had no ideas at all when I started... it looks ok.

I was not impressed with the MB help, so I looked for free video tutorials

• that made a real difference in understanding the program and what it can do.
  Watching and listening to a Pro use MudBox - gave me some real insight.

If you don't mind high poly models, this is a great application IMO!