Schwert,

I got a reply of sorts from the Eydon Kettle Co, makers of the "Storm" and "Popular". I had asked about the capacity of each model in ounces, what I got was 1.5 and 1.2 liters, respectively.

At least that's unambiguous, just in case fluid ounces also vary from continent to continent... :-)

That makes the Large about 50.5 ounces and the Small (Popular) about 40.5 ounces. That means that they have stated that it's both "just under two pints" (below 40 ounces) and just over 40 ounces, but never mind... it's going to be somewhere in that neighborhood.

The Popular looks like the best size for me. I suppose if I fall in love with it, I might end up with a larger one as well eventually.

Curiously, the weight of the two models (empty) is within an ounce of each other... so, unless bulk is a problem, an argument could certainly be made for the larger as more versatile.