Rocky was the best IMO I would put Rocky Balboa next, I was sucker for the soundtrack, so I put four next, followed closely by three. Two was the most cliche, a borderline chick flick, but still tops five, which was absolutely dreadful.
I am disappointed by the lack of love for Rocky 3 and more importantly Mr T! Rocky 1 and 6 are definitely the most solid films, but Rocky 3 is at the top when it comes to guilty pleasures (or Predator).
I voted 3 because I find it the most enjoyable. But strictly from a film critic perspective I would say its: Rocky Rocky 3 Rocky 2 Rocky 4 Rocky Balboa Rocky 5