It is generally agreed that any Unix user should be able to use vi, regardless of which editor he prefers to use regularly.
Apparently vi doesn't exist in Debian - vim, nvi, and elvis (maybe others) all like to have a symlink named vi pointing to them. A year ago when I was running Slackware, I thought I learned enough about vi to use it, but not well. Then I found I was learning elvis, not vi. When I first installed Debian I tried using 'vi' (I don't remember which of the almost clones it really was) and found that some of the commands I was familiar with caused the famous "unexpected results", so I gave up. Which of the vi semi-clones on Debian is most like the original vi and most likely to work on a broad range of unices? Bob