Who is better for Hyun Bin? Han Ji Won or So Hye Kyo?

I've just watched secret garden and I like Hyun Bin and Han Ji Won's chemistry so much! And I heard Hyun Bin and So Hye Kyo were dating. And I also heard that they've broken up recently. What is the reason? And for my true question, haha, if you were to give your vote on who's better for Hyun Bin, who would it be? =)