Chad B calibrated my 51" F5300B tonight. This display calibrates remarkably well by any standard, but especially for the money.
I also cannot recommend Chad enough as his expertise, experience, and equipment allows a display like this to reach this level. He's cal'd a number of my displays over the years and always does absolutely top-notch work.
Due to space requirements, the system is not allowing me to post the PDF calibration report (any ideas on work around?) The greyscale is at a DE 2000 of .36 and the gamut is at .68
As far as MLL, the display did rather well although the blacks do float (as they do on all Samsung plasmas).
Measured on black full screen:
@ 24 hz with BO Dark room .00198
BO Off .00649
MLL measured with APL 18% window BO Dark room .02552
@ 60hz with BO Dark Room .00241
BO Auto .00255
BO Off .00743
MLL measured with APL 18% window BO Dark room .02758
(Please do not ask for settings