wait i know i asked an odd question, how can you answer when you dont know my preference.

but thats precisely what i want  recommend me a series without knowing my taste but what you think anybody would definitely like.

try maybe your recommendation will become my new fav.

Six Flying Dragons!! Or maybe Chief Kim if you want comedy!
I don't think there is a drama that anybody would definitely like. I think Nirvana in Fire is the definition of a masterpiece and a lot of people agree. And yet there are people who dropped it because they think it was the most slow and boring drama they've ever seen.

Lots of people went crazy over Goblin and said it was their new favourite drama of all times. I thought it was very, very stupid and rather boring overall with only a few good scenes.

So...

Edit: Now I've seen your list and see that you like both! *lol* I can't figure out your taste... Well, you could try Ode to Joy, that's a very likable drama! Or the wonderful On the Way to the Airport. :)
Strong Woman Do Bong Soon
I'll just recommend 5 randomly picked series. Let's say :

Two Weeks
Tomorrow With You
It's Okay, That's Love
King2Hearts
I Hear Your Voice
The Master's Sun
Baek Hee Has Returned
Bromance
Cruel City
38 Task Force
You're All Surrounded
Cdrama - Boss and Me, Eternal Love, Battle of Changsha 

korean- Last, Nine:Nine Times Travel, 1% of Something 
Signal
Healer
Kill me Heal me
The greatest love
Maou
Kazoku game
Pride (jdrama, 2004)
1 liter of tears
thanks guys for all these suggestions..........i wasnt expecting this many, thanks i am going to have some fun going over them