fish

zsh, although I don't remember why I switched from bash

Zsh - IIRC Short scripting is a tiny bit less akward and plugin features like autosuggestions work well. But I have switched a long time ago - not sure how bash really compares

I also always wanted to properly migrate to emacs eshell but it doesn't have term capabilities (bc it isn't one) and I have not sat myself down and replaced the workflows I of commands that require it

I use simple old Busybox ash, which comes as default with Alpine Linux :)

No fancy features at all, no bashisms. Not everyone's cup of tea I'm sure, but I like the extreme simplicity.

I used fish for a while and its user experience is awesome! The reason why I stopped using it was that because it is not POSIX compliant it won't run many bash shell scripts, and I found myself having to open zsh and bash a lot for a class I was taking.

Tilix and zsh has been nice, since I wanted to make my shell window a bit transparent, like 85% alpha, just like how it looks.

Bash is the default everywhere on the Linux world.There is nothing that I couldn't do in bash that made me change the shell, so I keep the "default"