This drama still holds up after 10 years!  Writing this review in 2017.

Obviously don't expect the same levels of cinematography and production value since this is a drama from 2007.  Technology is also dated.

Plot is well-paced.  Nowadays the plot is usually very fast moving.  In a way, it's nice to watch a story that develops at a reasonable pace.   Enjoy this like an aged wine.

Lee Jun Ki's acting is on point.  I thought his acting was ok, until halfway through, when something happens and he takes on new personas.  And then, I was pleasantly surprised!

The relationship between Mao and Kay is interesting in this.  Father-son relationships  (even the adoptive, pseudo kind) are always more intriguing than brotherly relationships.  

The female lead's storyline is a bit annoying, especially in the last few episodes.  The bromances in this drama could have been further explored, but wasn't, probably at the expense of poor writing.

All in all, an enjoyable watch!