Currently searching for a drama to watch and actually finish... Check my list for some of my favs.
Rule #1: Never watch a Melo with a love triangle. Not once in the history of mankind has a love triangle been something that makes a melo better. It literally only has one purpose and that is to make me not want to watch that drama. Its what author use when they are not creative enough to create tension and angst so they add a love triangle.
Rule #2: Lower your expectations for all dramas. As soon as you go in thinking it's gonna be the greatest thing on earth you start to notice EVERY single mistake or plot hole. So go in with low expectations and you'll enjoy the drama X3 more! I have suffered from unimaginable hardships while gaining this information hope it helps.