Woman of Dignity. Hands down. It's been such a surprise to me. I started watching it because I really love Kim Hee Sun, but i was expecting something more makjang and cringey. It's been perfect from the first episode. I have one ep left to watch and i still don't know what's going to happen. All of the acting is brilliant, and casting Kim Hee Sun and Kim Sun Ah as duel leads was a stroke of genius. This drama is brilliant. It's my favourite drama this year, so far!
Haven't watched "Woman of Dignity" but it's very popular in Korea (pretty underrated internationally, I think?), amongst slightly older women? As for "The Guardians", I highly recommend it! Loved the female protagonist and how she was fighting for equality! The evil people will [surely] drive you crazy though.
I agree with Naksken. I only watched it on a whim (was looking for something new to watch and it just started airing) and got addicted to the show, loved the cast and I felt second lead syndrome with Lee Ki Woo :) haven't watched The Guardians before so don't know about that one