I have an african Grey, Boomer, who has a huge vocab. I really have to be careful what I say around him because he picks up new words and phrases very quickly. He is very intelligent too. I train sport and police dogs, boomer shouts out commands to them all the time. When one is barking he will tell them by name, to hush. He was singing Old McDonald the other morning my male shepherd , Tres, started to bark near Boomer's cage, Boomer stopped singing long enough to shout out "Tres, Hush" then started singing again. I guess he hears me say the pharse to the dogs quite often. The whole family has to spend equal time with a grey because sometimes they can get bonded to one person and only want to interact with that person. But if you are wanting an intelligent talking bird, I say go grey.