My favorites are Stefan, Care, and Hope. My least favorite is Damon.
STEFAN AND DAMON: Stefan is probably the worst because he does terrible things with NH due to him not being able to control himself but imo that's why I love him without it. He is drastically different without it and it makes it really interesting. On the contrary, Damon is exactly the same without humanity just a little more carefree. Damon never really did anything with his humanity off that I couldn't see him doing with it on. It was basically just an enhanced version of regular Damon. That is why I don't really enjoy nh Damon.
I really enjoyed Caroline and Hope because, similar to Stefan, they were very different with it off.
Caroline was in perfect control of herself, never did anything off the hinge, and had some really good lines and scenes. I really enjoyed it. She was also very confident and carefree which is a big contrast to humanity Caroline who is always worried and stressed about something. I also like that we got to see a lot more of her abilities. Caroline is never quick to hurt someone, especially her friends so seeing her take on Stefan multiple times and use her intelligence to help further her was really cool.
Hope was more powerful than ever before. Hope arguably is one of the kindest people in the show with a big heart. She worked night and day saving the school and everyone in it while not many people were doing the same for her. Seeing her turn around and open up the dark side we all know she has was amazing. I was always waiting for her evil era and I was not disappointed. Her lines, her power, the way she carried herself, and even her outfits and hair were always on point. She was a little off-hinge but in the best way possible. Similar to Caroline, we really got to see her power and see her do things to specifically her friends she never would have done. She was really a different person and I was waiting to see that from her for 4 whole seasons!!
Elena was fine. This might sound a little biased but I don't like the way she came for Bonnie and Caroline. I know I said previously I enjoyed it when Care and Hope came for their friends when they otherwise wouldn't have, but I found no benefit in Elena doing so and she also never apologized. Care apologized to everyone and Hope also apologized but with Hope, I found benefit in the people she hurt specifically her turning Lizzie. Hope was also highly provoked before she completely resorted to violence. Elena came for the kill with little to no provocation and didn't even apologize (to at least Care, not sure about Bon). She used her humanity as an excuse and it was a really big letdown when she turned it back on for Matt. I mean, I understand it but it was very anti-climatic and didn't really have much to it besides him being her childhood friend..