Easy for me - Max.
He is honest, loyal, funny and works hard all of the time. He is so down to earth and has not let fame change him at all. he is also confident enough to be himself and not try to be what any one else wants him to be - what a great role model.
If I have to pick another (that I am not biased toward), Harmes is it. His improvement this season has been out of this world. He seems like a really nice guy too.