My opinion and only that
I have a moluccan and to be honest, I don't think they should be
kept as pets. There is too much bird there. I don't think it's
fair to them to be kept in cages for 50-100 years. They have
such powerful beaks. They deserve to be able to spread their
wings and fly. I was told all this before I bought one but I
didn't believe it. Since being around the moluccan and other
parrots, I have seen that she is very different. In the wild,
they don't pluck or kill their mates. It's something that we
humans can take credit for. Knowing what I know now, I would not
get a large macaw or cockatoo again.
That said, I think the smaller cockatoos make better pets. They
seem to do much better in captivity and aren't as likely to do
as much destruction should one get excited and bite you. I
really like the umbrellas, goffins, and rose breasted. I think
the smaller cockatoos make better companions. I would consider
getting a rose breasted, goffins, or bare eyed baby if I ever
wanted another cockatoo.
Best of luck to you.