Just ordered one. It blows away any other TV at this price range.
Bought a 47DT50 three weeks ago and was very happy with it, except the light black levels, lack of local dimming, and lack of advanced calibration settings. DT50 is exactly the same as WT50 except lack of local dimming, dual core CPU, and advanced calibration settings.
My ONLY complaint is the red, bright power indicator light. It cannot be turned off and is very annoying.
Can't comment on Smart TV or 3D since I never use these functions.