Who played Hercule Poirot perfectly?

I have seen many Agatha Christie TV films over the years as I'm a great fan and I have to say my favourite person to have portrayed the Poirot character is David Suchet. He seems to have made the role his own and any other person I've seen just doesn't seem to be the same. I would say Peter Ustinov as second choice if I had to make one... Who do you prefer yourself?