I know this is an old post but need to mention something here of importance. Was looking at a fansub site where they had bought american version bluray discs. They mentioned that the bluray discs were of worse quality than the original japanese version. The color, contrast, picture and audio quality was inferior than the japanese version.
Only plus between the japanese discs and the american discs was the price. The JPN disc whole set cost about 100+ USD while the US version was just about 45 USD shipped. lolz.
A lot of comments on the topic by US people who had bought dvd's before pointed to generally bad dubs and picture quality etc. Seems with lower cost, quality of encodes goes for a toss.
Guess where to source your discs from now onwards...