Tbh, almost every Netflix anime I've watched has been pretty good. Castlevania, Ultraman, Baki, SwordGai, and A.I.C.O. were all pretty good.
Though I can't say that the new Berserk was good. It was honestly terrible. I didn't even tough it out just to know what happened in the second season. I made it through season 1, and like 3 or 4 episodes into season 2, before I had to bail out because it didn't know wtf it was doing anymore.
I'd love to start Seven Deadly Sins, but I'm afraid that they've made the tone too much like One Piece, when it went from manga to anime. One Piece is bloody as fuck in manga form, but the first few seasons of the anime I saw had almost none compared to the manga.
Though right now, I'm pondering starting Seis Manos and Kengan Ashura. They both look decent enough, though Kengan has that same horrible cel-shaded 3d modeling that Berserk used, so I might not make it through that one. I don't know. Netflix has a lot to choose from. XD