I started watching jdramas before any kdramas. When I first started to watch kdramas I thought kdramas were wierd compared to jdramas. It took me some time to get used to get. Now I watch mostly kdramas.
For someone who started with kdramas it could also take some time to get used to jdramas.
But I don't think jdramas is better than kdramas or kdramas better than kdramas, it's too difficult to compare them.
I love both.
Some jdramas that I love:
Pride (romance &sport)
A million stars falling from the sky ( Mystery, Thriller, Romance)
Atashinchi no Danshi ( comedy)
Innocent love (Romance)
Tatta hitotsu no koi ( drama, romance)
Tumbling ( sport, drama)
Kamisama mou sukoshi dake ( romance, drama)
Jin (medical, jidaigeki)
Nankyoku tairiku ( drama, adventure)
tempest (Jidaigeki, historical)