I've seen this film several times since its release in 2010 and I enjoy it every time. As a fan of martial arts and westerns, it ticks two boxes wonderfully well
The visuals and the beautifully choreographed fight scenes, incorporating lots of wire work, are stunning. The story itself is interesting with several threads and the acting is second to none. The cast contains several familiar faces - Kate Bosworth, Geoffrey Rush, Tony Cox and Danny Huston. The lead, Dong-Gun Jang, isn't well-known to me (although he has been in the last season of Suits), but he impresses even in his quiet scenes.
To summarise - good story, martial arts, traditional western elements and stunning visuals make this a joy to watch and I'd recommend it every time.