Marvin is the tallest among/of all.


Do both among and of fit in the above? Thanks.
If you really want to know the truth, search at Google

on the BBC and the New York sites. You can do that by searching for:
site:bbc.co.uk "tallest of all"
(everything in the above must go into the Search box, in order to identify the site searched)
site:bbc.co.uk "tallest among all"
site:bbc.co.uk "tallest amongst all"
site:nytimes.com "tallest of all"
site:nytimes.com "tallest among all"
For some reason, among fits better. I'm curious about what the natives think.
 Marius Hancu's reply was promoted to an answer.