Well, I have the most 16oz tumblers, as I collect them from brewery's I've been to, like many on here, but my preferred drinking glass is my 20oz Willi Becher (the one I have is from Hess). Our glasses at the brewery will also be 20oz willis, so we can pour 16.9oz imperial pints. I love filling that dude up and having plenty of room for big, fluffy head.