Big Bang Taeyang? 8/10

Kim Dong Han

6.5/10 (Not my cup of tea, sorry)

NCT

Their music really depends on the unit but probably around a 6.5-7? 

TVXQ

i don't like him as a singer, but he writes good songs sometimes so 6/10

ikon

7/10,they have great ballads, someday will always be one of my fave kpop songs

Dreamcatcher