captainsolo said:

That's what I've always wondered. The THX95 versions always seemed somewhat superior to the 93 editions but it may just be a marginal difference. Some have claimed that there is no difference at all. Who knows?

I remember reading a review that compared both the Definitive Collection and Faces LD's of the trilogy just before the "GOUT-release", and according to that review, some of the worst DVNR artifacts on the DC set were fixed for the Faces release, It pointed out that, Luke's training with the remote aboard the Millennium Falcon in STAR WARS was badly affected from the digital noise reduction on the Definitive Collection and corrected for the Faces release, I don't know if it's true or not, maybe it was referring to the first press of the DC as it has many documented problems.

One really weird glitch is on every THX95 PAL-VHS I've seen of The Empire Strikes Back, in the chase through the asteroid field every TIE Fighter's laser blasts is suddenly blue instead of green, is it like that on the PAL LD's?