I'm a new refugee from Obsidian - prior to Obsidian, I used OneNote, VS Code, NValt, etc, what have you. The onboarding process is definitely challenging - I started with a vanilla Emacs and had no clue what to do. I tried using Spacemacs - loved how many features were included but ultimately, I found it slightly bloated. Start-up time on my beefy PC was ~4-5 secs. Switched to Doom Emacs and so far I'm loving it. Start-up time is 0.5s and I have pretty much all of the same 'features', plus I can turn on what I need.
I'm finding it to be an excellent C++ IDE with the LSP package, and there is nothing quite like Org-mode. I'm still finding new features. Deft takes care of my NValt addiction, and if I really needed a ZK-ish setup, I can integrate that with org-roam (and still keep those two things separate).
Still looking for a good diary/journal solution to replace my previous one, but I'm ok with how it is for now.