We had our Panasonic GZ2000 calibrated by Vincent from HDTVTest. He was very clear and thorough during the process and gave deep explanations for each stage of what he was doing. He was accomodative of any questions we had and very careful to ensure that he worked to our preferences. We wanted totally unbiased viewing, as pure as possible, with no skews or compromises for us. Vincent delivered this for us and we are very pleased to have him work with us on the calibration of our TV. I would definitely recommend for anyone getting a set of good quality, as the difference is stark versus out of the box or to any calibration by eye.