@ Tony: Maybe Jiarong stated it better, but Lacus is right - the OS press is good, even great, but the JP press is
better. Maybe superior is the right word to get it across - but the DVD print is better, the DVD case is usually better and the quality of the paper the booklet has is better. I only have a few DVDs but I have lots of CDs and some are OS press - the paper in JP presses is usually nicer in feeling and the album DVDs have slightly better picture than the OS press.
The paper is something that most people notice when comparing versions, but the picture/sound quality is usually picked up by audi/visuophiles

I personally don't notice it that much but it's not relevant to my viewing habits but I'm aware that there are differences
Getting back on the topic of the new DVDs... If I were to order PCDL now, the order of best quality would be JP > HK > TW? Or is the TW press still superior to the new HK press?