I tried out zsh and just could not get used to how different tab completion was vs bash, so went back to bash quickly. Is tab completion on fish more similar to bash than zsh is?
No, fish actually has super fancy autocompletion with suggestions, which is even more complicated and visually messy than the zsh defaults. Furthermore, none of it can be disabled in fish. (This is why I don't use fish, fwiw.)
On the other hand, you can disable all these advanced features in zsh and get something a bit closer to a bash readline shell, with a few extra features. That's what I use.
I didn't find it too much of a switch — it works well and things like Option-><arrow> to complete it word by word are really handy with repetitive tasks like using the AWS CLI.
