Summary: If your spending the money on this beautiful plasma TV and you want to get the best out of it then you should do it the right way. Dnice is a professional TV calibrator. If you go to highdefjunkies.com and search for P55ST50 you will see the settings thread.
Summary: Solid picture- especially good black level and accurate color. Some of the well-documented issues persist (ABL, crosstalk in 3D, some noise in dark scenes, etc.) For me, however, it's the audible buzz that is the potential deal breaker.