suggestions for tests
The problem with theses single battery systems is the boost circuit uses PWM. This isn't a problem for me but for some people, they find that the PWM causes some flickering. If you could test this, that would be great. Just turn on a desk fan and pop the light on behind it. You'll notice a strange effect and that is the PWM.
Still this one looks good. It could be just the photography but the white is quite white without the blueish tinge of the M-Edge.