Eric:
I will commit to the Diamond Mill light and the matching AAA body when available. The two things for me to sort out are:
1) I would prefer some sort of a large spot, I don't want a beam with a small bright spot, nor a pure flood (like a reflectorless light), but tending toward the flood. I wouldn't even mind a large spot with no spill. I don't know if this means the Cree is still OK for me, or if I should go with the McR-10 configuration.
2) My computer is not showing any pictures at the moment, but I love the look of the Diamond Mill light held between the two fingers. If the configuration in the picture is with the Cree (cause the McR would use a larger head?) then I guess I would go for the Cree.
And my issue with the "follow the bouncing ball" is not due to unsteady holding of the light, but rather that the eye tends to follow the spot as the light is moved around - a large spot or pure flood eliminates this.