Our group did the Da Vinci theme. This was the third escape room that my group had done (although my wife and I have done others overseas). First off, I'll say what I enjoyed most about ClockLocked's Da Vinci theme:
We will be back in January to try out Dexter, which we are really looking forward to.
[I note that we did this room when ClockLocked had just opened, so some of the above issues that we had might have been rectified by now].
Themes: 2 themes (although I understand a third "Cleopatra room is planned)
Cost: $30 each (4 players) (But watch out for coupons - we got 50% off )
More details: http://clocklocked.com.au/