I love 3:10 to Yuma! I think it's better than High Noon. Ford gives such a complicated, seductive performance.; while Van Heflin excels as an everyman who takes a dangerous job just to get enough money so he and his family can survive and then has to face fear, temptation, and a growing need to do the right thing. Those last few minutes when they try to get to the train are real edge-of-your-seat stuff, and put to shame similar higher budget efforts. And, that ending where Heflin's wife is waiting by the tracks to see if he made it out alive, and he waves to her from the train and it starts raining is one of the most satisfying endings ever.
Ford and Heflin made this movie. I've always loved Ford, and I think Heflin is the best actor I've ever seen. He wasn't the most attractive guy in the world, and I suppose that stopped him from becoming a really big name star, but he was just so damn talented.