My Ratings:

9.1-10 will be highly recommended because of the story arc of drama, will definitely rewatch it because of soundtracks, main leads and with less than 30 to 36 episodes.

8-9 awesomely good story with good pacing, actors are great with their character development, mainly believable, did not fast forward any of the episodes even up to 40 episodes and will definitely rewatch.

7.0-7.9 not interesting enough swoon worthy dramas with too much fluffiness; frustrating because of story lines; plot sometimes twistedly boring but you just had to finish it, had to skip and fast forwarded some eps., curiosity of what the ending is. Definitely will not watch it again too many episodes to watch.