The New Adventures Of Black Beauty

The New Adventures of Black Beauty was a continuation of the popular 1970's UK Adventures of Black Beauty with two original cast members moving on to New Zealand.
http://en.wikipedia.org/wiki/The_New_Adventures_of_Black_Beauty_%281990%29
After 24 episodes the story transitions to Australia. I believe the New Zealanders return to England and the horse moves to another family in Australia.
Someone familiar with all these told me the 1990 New Zealand episodes share the same high production value as the 1970's UK Adventures of Black Beauty, but the 1992 Australian episodes are a bit "dumbed-down".
I've lumped all 3 programs together thus these are Discs 4,5,6 with the Adventures of Black Beauty being Discs 1,2,3.