A lot of experts here were saying that there should be no difference at all, in terms of PQ and AQ,..
But in my experience, there is a huge difference,
Great samples are Rambo (R3), the audio track is not 5.1, only 2 channel, compared to the R1 that I got from Amazon, and the R2 my brother brought home from UAE...
PQ is very grainy and pixelized, not even in WS format,
as well as the titles NEXT and Forbidden Kingdom,...
I do have the discs here that's how I know...
Cheers..!