rUBY

Is cool.

I made a benchmark to put this matter to rest. In both case I went in edit mode, wrote the sentence "I am an expert programmer" then quitted without saving.
$ time vim
        5.95 real         0.02 user         0.00 sys
$ time elvis
        6.51 real         0.01 user         0.00 sys
If you don't know how time(1) works, it means that vim is two times slower.