The Next Year: Musical Project: Best Leading Actor 1964

The Nominees:
Anthony Quinn - Zorba the Greek
Peter O'Toole - Becket
Peter Sellers - Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb
Rex Harrison - My Fair Lady
Richard Burton - Becket

So what do you think? Who will I pick? What will be my ranking of these performances? What is your ranking? Write in comments.