I went for the more expensive JVC 37" LCD 100Hz model precisely because it had 100Hz. The difference in picture motion in the several shops which stocked them both was startling. Pictures and movement on DVD and satellite TV are excellent to superb in SD. Terrestrial broadcasts variable but we don't bother with an outdoor aerial because we watch so little of it. We have no HD sources but it was gobsmackingly superb on HD in the shops. The difference between it and the same model on HD without 100Hz was also clearly visible in the shops