I finally received my BLF A6 this morning. Overall I'm just happy with it, it'd be false to say I was surprised or that it exceeded my expectations though.
Compare to my V-Shark VS-X2 XM-L, the BLF A6 has a medium sized bright spot with a duller area which is almost as wide of the V-Shark. In the bright spot, I'd say it's slightly brighter than the V-Shark - if I shine them together, the BLF A6 definitely overpowers the V-Shark in the centre, but then the V-Shark overpowers the BLF A6 outside the centre.
I was taken aback by how small the torch is compared to my V-Shark. But that's why I bought it. It'd be nice if it was zoomable, but that's not a major issue.
I managed to unscrew the head from the body of the torch, but I couldn't get inside the lens head like my old torch. Is there some sort of tool you need to unscrew this? I imagine you also use the same tool to unscrew the button so you can access the circuitry that allows you to modify the firmware.
Overall, the BLF A6 is an okay torch, but it's only bright in the centre of the beam. If you want a bright and wide beam, forget this torch.