Idk I thought CSM Part 1 was amazing, but Part 2 has just sorta been okay for me so far. It's not
bad and it still has some good moments, but it sorta falls short of "great" to me.
As far as new gen battle manga that I'm keeping up with, I'd say that I like Dandadan, Kindergarten Wars, and (memes aside) Kagurabachi more than current CSM tbh. Also even though it's not
technically a shonen (still about people with super powers fighting each other so whatever), Choujin X is genuinely amazing and keeps getting better with each chapter.