I am only enjoying Kim Su Hyun in the adult parts (I know, I know, the world is ending! But I think this might finally cure my aversion. Though he still looks about 12 and is thus as attractive as a wall to me. I want my period drama heroes looking more like Jang Hyuk and less like an adolescent). JIW is a good actor but Yangmyung is about the most thankless role there is. I actually don't like any of his dramas post Return of Iljimae though I think he did a good job in all of them.

Han Ga In? Oy. Very beautiful, excellent taste in men in real life :P but as an actress, I've seen more interactive rocks. She's not expressive and has zero chemistry with any of her putative love interests (she never has any chemistry with her costars, with the exception of Kim Jae Wook in Bad Guy and we all know how that went). Shockingly, the age difference isn't as in evidence as I thought it would be, but that is about all I can say.