Seems like the poor PQ on the Samsung is a mystery to engineers at both Sony and Samsung. Sony seems unable to recreate the problem on their gear. And a bunch of engineers from both companies are initially pointing the finger at an always on noise reduction setting for the 'crawlies'.
That the original Sony masters don't show the same artifacting might mean that this is a Samsung problem. I guess we'll know in a few months.
On the plus side, LPCM seems to be the best quality audio these guys have ever heard. Can't wait to hear it myself. :D