> For Vim users, I also suggest enabling Vim mode in Zsh. It makes editing commands much faster.

I am also an avid Vim user but I disagree. The default readline is perfectly fine for single line commands (you do have to know your way around some basic commands though C-a/u/k/l/w...). To edit long commands in $EDITOR you can always do C-x C-e in bash/zsh (M-v in Fish). As a matter of fact everytime I pair program with my colleague I always think he is editing those short commands slower than I would have because he has to change modes all the time.