I love and play my TH regularly, its fascinating and amazing.
My WOZ however gets way more play. People like it and what it has to offer is more apparent visually.
The TH has deep modes and is a shooters game, its not as easy to see what its about from the surface, you have to really play it to understand and appreciate it.
Both are excellent choices but for novice or beginner players the WOZ is exceptional.
My wife plays the WOZ every day and feels like she is mastering it. Prior to getting my WOZ she never played pinball or only showed a casual interest and I have several of the top titled games and am in on the AFMr.
She also likes the IJ and my Farfalla.