Something that has low MDL score, but for you guys are one of your favorites. 

For me is Like: Forecasting Love and Weather, Lovestruck in the City and She Would Never Know.

A K-drama that might have a lower MyDramaList (MDL) score but could be a personal favorite is "Healer." It may not have the highest overall rating on MDL, it's a very popular and well-loved series with a strong following. I love its blend of action, romance, mystery, and strong character development