The 206g light weight Magicshine Allty 2000 shines brightest.
Even at medium level it is brighter than all other tested handlebar lamps.
The runtime at full brightness is only one hour however one of the lower brightness modes is more than enough for most occasions.
The lamp attaches to the helmet mount in no time at all.
The handy OLED display shows the remaining battery capacity and calculates remaining runtime in hours:minutes format very accurately.