Which drama should I finish watching?

Alright, I've only watched 2 out of 50 episodes, so I don't know much. I just want to know if it's worth to spend 50 hours watching it.

This one has been on my On Hold list for so long I don't even remember what it's about lol I know there's a connection between the South and North... and that's pretty much it. Since it aired on 2012 (more than TEN YEARS ago), I don't know if it aged like wine or milk.

I started watching this one because Park Hae Jin, but the plot is so predictable that it became boring to me. It was aired in 2014 after all, I don't know what I was expecting lol

I hate how the male lead keeps mocking the female lead. Also, the despiction of Agoraphobia is... less than ideal. I don't know if it gets better. I don't like the chemistry between the leads and Park Shin Hye probably has some terrible kissing scene in this one, right?

I love Yoon Ah In's acting so I didn't think twice before starting this one. However, the rating of 7.8 here on MDL is off putting. Also, I don't like sad endings.

The female lead is very annoying. I've only watched 3 episodes, so she could be better later on. If she doesn't change, then I don't know how I can watch this, even if I do like the chemistry between the main leads.

I can barely remember it. I just remember that the male lead was a red flag in the beginning. I don't know if there's some character devolepment.