Vincent from HDTVTest arrived spot on the arranged time.The calibration was very thorough and took over 2 hours.Vincent talked me through every test he was doing and explained all the different readings.He was very easy to understand (even for a novice like me ) and encouraged me to ask questions. Post calibration I am very happy with the results.I had a decent picture before but Vincent has taken it up a level.The picture is just that bit more sharper and life-like (never more apparent than when Vincent showed me pre and post calibration pictures.) When it is time for a new TV(not for a while I hope),the first call I will make will be to Vincent and HDTVTest to arrange another calibration.