That Disney WOW disk is pretty darn useful. My son has one and I'm grateful he came over with it and calibrated my Samsung TV. Not as big a difference as my other son got out of it with calibrating my old Toshiba Regza, but still a noticeable improvement. I've never used the Disney disc, but I really like the Spears and Munsil disc. I have both the regular BD and 3D versions.