I've only smoked one tin of Balkan Sobranie #759 and didn't find it to be anywhere near as good as the "legendary" status it has attained. Maybe it was better in the 1970's when it was fresh. It's too expensive and hard to find for me to really try it again.
Having said that, I have to say that I much preferred Blue Mountain to Black House, but both were very good. I haven't sought the 3rd blend from Altadis. I don't even know if it's available.
They weren't the same as Sobranie 759, but they were similar. They were also better to my palate, but the Sobranie 759 I had may have been past its prime.