Airscapes said it best. Get one of the cal disks (like the free AVS-HD709) and set the basic settings yourself (contrast, brightness, sharpness, aspect, color,etc). That can go a long way in improving your pq without getting into a full calibration which requires the use of meters and special software. Every tv that comes off of the production line is going to be different due to spec ranges so "sharing" settings doesn't always work. Besides, the environmental conditions are different for everyone (lighting, use of a bias light, etc) and there is personal preference that comes into play as well.