Ok, got some pics for you!
Top to bottom: Addict 2, Tanaka Sekiso, 240mm Artifex, 240mm Kikuichi Carbon Elite
Heel height measurements are as follows: 2 1/16" for the Addict 2, 2" for the Tanaka Sekiso, 1 7/8" for the Artifex, 1 15/16" for the Kikuichi, which has been sharpened a lot. So I guess there isn't as much difference as I thought? The Addict 2 is taller and feels a bit different, where the other 240's I have feel much nicer. May be the balance?
Tanaka on top, Addict 2 on the bottom:
I like the less curve of the Tanaka more than the rounded belly at the tip of the Addict 2.
Choil pic, Tanaka on the top left, Addict 2 on the bottom right. The Tanaka is thicker with a convex grind that brings the bevel thinner behind the edge. The Addict 2 is more of a full flat grind, starting thinner at the spine, but ending up a little thicker behind the edge.