Recommendations for Korean Horror and Thriller Titles

Hello everyone. I thought it would be a good idea to recommend some South Korean horror and thriller titles for those who may be interested. This is not a comprehensive list, but will hopefully be somewhat useful.

Let me know your thoughts on any you have seen. 

Horror

The Wailing (2016)
Spider Forest (2004)
Whispering Corridors (1998)
I Saw the Devil (2010)
Hansel and Gretel (2007)
Phone (2002)
Train To Busan (2016)
Bedevilled (2010)
The Uninvited (2003)
Possessed (aka Faithless Hell) (2009)
Silenced (2015)
Epitaph (2007)
Thirst (2009)
The Piper (2015)

Thriller

The Chaser (2008)
Midnight F.M. (2010)
Cold Eyes (2013)
Confession of Murder (2012)
The Terror Live (2013)
No Mercy (2010)
Save the Green Planet (2003)
The Neighbors (2012)
A Hard Day (2014)
Montage (2013)
Phantom Detective (2016)

YouTube Asian Movie Review Channel
https://www.youtube.com/user/anticlimacus100