For menu complete with bash, the easiest is to add:

TAB menu-complete

inside of "~/.inputrc" then start a new shell to test it. Thats because it uses readline to handle command line (and inputrc configures readline).

Note: im not saying the experience is not better in zsh, just that both can do all this stuff. ive been switching between zsh and bash quite a few times myself over the last decade and use bash daily most of the time lately.

In my eyes:

zsh:

- nice and neat to configure/less bloat maybe

- powerful scripting language

- some scripting syntax requires zsh so when you get used to that... you write non-portable stuff ;)

bash:

- does approx everything zsh does and some more

- scripting language works everywhere because everyone has default to bash

- scripting language is slightly less powerful than zsh in some ways

- configuration is a little more all over the place (just like the .inputrc above)

Thus, all things considered, and given the improvements in bash over the last past .. 5 years or so - i'm using bash more often even thus zsh is also a very nice shell.