While zsh may be more 'useful', I find it a bit too smart. Many of the features are very interactive, and introduce a non-determinism that messes up my ability to fix errors. An example is command correction. I (usually) know when a command is wrong, and go to fix it without thinking. Being asked if you really meant some other command interferes with this, and while seemingly helpful, makes you wonder if a shell should really be doing that.

The directory listing shares the same problem. Once you have a list, it's just as easy to type the path then it's to cycle through the list (not that zsh stops this), it's just another interactive feature.

Then there is path-completion, which removes the / on the end of tab-completed paths. Since rsync treats a directory with / different to that without one, this feature annoys me to no end when using zsh.

I understand that all these are options, and could easily be configured. I just wonder how other people feel about them. Does anyone actively use these features? Do you find they can occasionally get in the way?