Why Catholic?

As an Anglican, I discussed Christianity with a friend who belongs to the Indian Orthodox Church. He told me that although his Church had seperated from Rome in AD 451, they still believe in the Real Presence, prayers for the dead, prayers to the saints and especially the Mother of God - in fact all things Roman with the exception of Papal Primacy.
What I thought was the belief of the Roman Catholic Church turns out to be the belief of all Christians prior to the Reformation. The Reformation was truly a revolution. I knew that I had to choose between Rome and Constantinople.