1. Signal

2. Dear Ny Friends

3. Six Flying Dragons

4. Stranger

5. Just Between Lovers

Ok I have only watched just over 20 Kdrama fully, so far this is my list:

Empress Ki - visually stunning, gripping storyline that keeps you interested for the whole 51 episodes, fleshed out main characters that evolve throughout the show, lovely acting and personally I love the romance in this(this has a male yandere, my favourite :-)).

Heirs - Classic school drama, poor girl, rich guy, an annoying parent, jealousy and a very prominent second lead guy.

Healer - well rounded with a bit of everything for most tastes, romance, action, mystery, you name it, this drama has it.

Cheese in the Trap - I think this teaches us about the complexities of human nature and that not everything is either black or white, but shades of grey.

Shopping King Louis - cutest and sweetest couple ever!
1. Let's Eat (season 1)
2. Age of Youth
3. Drinking Solo
4. Marriage Not Dating
5. I Remember You 
Healer, Strong Woman Do Bong Soon, Master's Sun, Cruel City, I Hear Your Voice/ Secret Garden.
Dong Yi
Fight for my way
Moon Lovers: Scarlet Heart Ryeo
Kill Me, Heal Me 
The Princess' Man

+The Master's Sun and Lucky Romance!
Weightlifting Fairy Kim Bok Joo is my all time favourite
but i also recommend
Love o2o even though its pretty long i was still able to keep watching it, like it didn't get boring
strong woman do bong soon, sooo cuteee
  1. Weightlifting Fairy Kim Bok Joo
  2. W - Two worlds
  3. Suspicious Partner
  4. Fight for my way
  5. Queen of the Ring
ONLY FIVE??

it's a bit hard decide consider all different genres.
I split the favorites based on the channel that broadcast them (total 54 drama)
and then I chose the best of the best but I still end up with 15 titles

WELL if I must re-watch I think that's the ultimate list:

1.God's Gift - 14 Days
2.Signal
3.Secret (the one with Ji Sung & Hwang Jung Eum)
4.Moon Lovers: Scarlet Heart Ryeo
5.The Snow Queen




1.My Father is Strange - Highly recommended - masterpiece.
2.Chicago Typewriter - Highly recommended - masterpiece.
3.It's Okay That's Love
4.Another Miss Oh
5.Chief Kim
1. Chicago Typewriter
2. Dear My Friends
3. Incomplete Life
4. Age of Youth
5. Six Flying Dragons
1. Shopping King Louis 
2. W 
3. I Hear Your Voice
4. Moon Lovers
5. Page Turner
1. Three Brothers
2. Master Sun
3. My Lovely Sam Soon
4. Youre Beautiful
5. Hello Monster
No order and most have probably watched them all:

Goblin
Shine or Go Crazy
Another Miss Oh
Cruel City
Beautiful Gong Shim 
1. White Christmas
2. Cruel City
3. 49 Days
4. Angry Mom
5. You Who Came From the Stars
1. coffee prince (pls watch)
2. my girlfriend is a gumiho
3. love rain
4. oh my venus
5. hmm reply 1997 maybe