I have to admit that I was sceptical about the relative benefits of professional calibration when I requested a quote from Vincent at HDTVtest and initially was undecided. However because he was in my area and had kept my details on file I decided to give it a shot...well all I can say is WOW!!! Firstly the service is hugely individual and Vincent takes as much time as you need to explain every step of the process so even to the uninitiated you can understand what is being altered and corrected. Once complete you have the opportunity to see side by side the difference between calibrated and your own best guess, the difference is remarkable. The subtlety in colour, tone and contrast is simply sensational and you finally get to see what the Director and Cinematographer actually intended. Simply put if you are purchasing an enthusiast grade TV then you need to budget for this service and these are the go to guys.