This is so hard!

So Ji Sub

Lee Joon Gi  forever =)

you are evil LOL

Only one huh...... Jang Hyuk

Second - Ji Sung, Third - So Ji Sub - everyone on your list are very good actors, but I've seen the most variation in character portrayal by Jang Hyuk simply because I've seen more of his work ;)

Park Seo Joon


The two other's that were making it difficult for me were, Ji Sung and Park Hae Jin. Seo Joon just beats them 

I say Gong Yoo because he was my first drama love.

Hard choice between gong yoo, ji sung, and so ji sub 

But I’ll say ji Sung after seeing his phenomenal acting in both secret and kill me heal me 

Jang Hyuk will always be my first choice, such an amazing actor in everything I've seen him in.

Second would go to Lee Dong Wook and third to Ji Sung both are also extremely talented.

Oh, man. Several of my favorites are on there. It's really hard to choose between Lee Min Ho and Lee Dong Wook. (And Lee Joon Gi!) Since I have to choose, I'm going to go with Lee Dong Wook

(But really all of them. .... And Gong Yoo.)

park hae jin!but uugggh.. lee joon gi is killin me also. just watched scarlet heart and he is so.....

Amongst the one listed, I would say Lee Dong Wook.