All in all, it wouldn’t make sense to output a version higher than what will fit onto a BD25.
Ok ! I’m asking 'cause I don’t use BD25 but a Kodi system, so I haven’t really thought about that. I also forgot that you used dvd sound sources for II and III (to be quite frank I’m not eve sure I could tell the difference between 448 or 640 kbps 😄).