No, `sudo su -` gives you a shell resembling one you would get when logging in interactively as root, while `sudo -i` applies some of its configuration. Which i

No, `sudo su -` gives you a shell resembling one you would get when logging in interactively as root, while `sudo -i` applies some of its configuration. Which is not always well suited for interactive uses to put it lightly. For example PATH is set to something smaller than I would like.