we just got our yesterday. have not "calibrated" it yet...actually have to do some research into how to do that on our own. but in the meantime, have gone between "vivid" and "intelligent sensor" depending on what is on and have been pretty happy.
only problem we have had is some vibrations when volume is up. i think we are actually supposed to fasten the stand to our entertainment center, but until then have some books supporting beneath the speaker area and there is no more vibration.