If you are a early morning person or mid morning person and a rabid Disney fan and you want to know all the history, go backstage, and walk around Magic Kingdom for 3 hours learning everything about wdw go on KTK. I really enjoyed it immensely we got to go on two rides (POC and HM), see CM's practice the Christmas Parade (this was in November) and had a lovely lunch at Columbia Harbour House. We also got a nifty KTK pin.
If you prefer your entertainment at night and you want to be completely enthralled and entertained. If you want to be awed and amazed. If you want good, clean, entertainment that will make you exclaim outloud and provide you with the perfect ending to a day, go to Cirque. Whenever we can afford it we go to Cirque it's so rich in detail that you see new things going on in different parts of the stage everytime you go, even though it's the same show.
We probably won't do KTK again. Either way, it will be a blast