Season 1 of the Haunting of Hillhouse is fantastic, and some of the best acting I have seen on tv. I'm less of a fan of Blymanor, it didn't really click with me.
Cobra Kai is also fantastic. It manages to be both funny, sincere drama, and nostalgic. A loving tribute to a movie that no one knew they wanted a tv show of. The writing in each episode is stellar.
Better Call Saul is also great, but is it as good or better than Breaking Bad? Personally, I feel the stakes are not as high. But it still is a great show.
Buffy the Vampire Slayer has stood the test of time. There are just so many great episodes. My favourite episodes are: Conversations with Dead People, The Wish, Hush, The Zeppo, Bewitched Bothered & Bewildered, Help, Dopplegangland, Passion, Revelations, Innocense, Halloween, Lovers Walk, Crush, The Body, Killed by Death, Earshot, Something Blue, Restless, Fool for Love, The Gift, Forever, Normal Again, Him, Bad Girls, and Once More with Feeling.
If that seem like a lot of episodes to list as favourites... yeah...