for me Jumong and Dae Jang Geum

I think the best historical drama series are :
Journey to the west
Dae Jang Geum
Ballad of Suh Dong
Legend.
But I think nothing can match Journey to the west.

my delightful girl is semi-historical...it's based on an old mythical story with a modern twist lol

For me, Jumong is the best historical drama but it has too much episodes, made many people don't want to watch it. ^^