Not sure what type of drama you're looking for (more action and suspense? more romance and drama? historical?), but you might like some of
Ha Ji Won's recent dramas (Secret Garden and after). She was the best in Empress Ki in my opinion - a great revenge story. I see that you liked Bridal Mask, so I think Empress Ki would be a good one to try. Here are a few others off the top of my head:
City Hunter
IRIS
Sungkyunkwan Scandal
King's Daughter, Soo Baek Hyang
Good Doctor
I Hear Your Voice
Innocent Man
The Princess' Man
Lie to Me
Protect the Boss
I also agree with It's Okay, That's Love - great drama!
Good luck!
