It is the best tv show I have ever watched. I have reached season 7, it is the most exciting at every point. The vampire brothers Stephen and Demon are sharing a really tough bond. I like the way caroline and elena acts. I also like that the originals came in between and made the show more exciting. I suggest that when you reach 4th season in vampire diaries start the originals along with vampire diaries or you can wait until you finish vampire diaries and then start The Originals. I am suggesting you to watch The originals as because it is related to vampire diaries.
All the vampire rules are appiled to both the series. It is a really a worth watching series.