Ah, I see, the build we're proudest of. Probably whatever my latest build is, because I seem to learn and improve something, from the previous build.
In terms of model kits, it's this Nitto PKA Gustav, from the Maschinen Krieger series:
And even since finishing that build, I improved the base, by replacing the groundwork made of a piece of foam coated with wood putty, with a much thinner groundwork base made from epoxy putty.
In my toy soldiers, I'm particularly proud of these civilians, because the glazing technique I used worked better than I expected it to:
I experimented with using thin glazes made of Future, water, and just a touch of color, to catch the sculpted relief on the castings.