I own a ton of Uni discs and have many friends and co-workers that do also and we still believe as he does. One or more of 3 issues often comes into play with DVD-18's: 1.) A Players abiliity to read over small unremoveable scratches and smudges on a disc which greatly effects dual layer discs. Also Dual sided discs are more prone to getting Scratches and smudges. 2.) The Discs were loose in shipping and received small scratches from moving around. 3.) The tightness of the spindles holding the discs in place and how rough an individual is in removing them. This can cause damage to the layer glue and often explains why a disc played at 1st and does not later on. I'm not claiming that these 3 reasons cover all the DVD-18 problems but they do cover the majority of them. Moving forward its good that Universal and most other studios have stopped using DVD-18's for those having problems with them.