Thanks.I own the Eureka one, and I don't have any problems with it. It has a slightly better encoding I see at caps-a-holic than Mill Creek's version, and it has both 2.0 and 5.1 for the original Japanese language (as well as the English dub).
No.
Eureka provided a check disc for purposes of this review, and so while I can't state whether the retail final is the same, this particular disc was region free and played fine on my Region A equipment.