Gloworm have been evolving the extremely adaptable X2 over the years and this latest version is the toughest yet. The cables – a previous weak point – are now properly stout, with bombproof connections to the head, wired remote and boxy battery. It comes on a helmet clip mount, with bar and GoPro mounts included. The X2 is light and angle-adjustable enough to work with a helmet-peak mount too. Its three-mode trail menu can be custom tuned. You can even change the default tightly-focused, clean-edged output by unscrewing the faceplate and switching to the diffuser or spot lens included. Small LEDs set deep into the battery face make the five-stage run time indicator slightly awkward to read but battery life is reasonable for its small size and reliability has been rock solid now the cables are sorted. Weight 340g Run time 2hrs 35mins Price $262