My Japanese version is the 2 disc set (1 CD and 1 DVD). The US version that I bought is the dual disc version. I'm not fond of dual discs - they are thicker than regular discs and some players won't play them. The reason I bought the US dual disc is that I wanted the mix in 5.1 Surround and that is not on the Japanese DVD. The first thing I do with a dual disc is rip the DVD portion with DVDdecrypter and then I can do what I want with the files - so far

Kathleen