In reply to Trangia:
Mainly, I use head torches for running, both on and off road.
On roads and the SW Coast Path* I find that the simplest Petzls are adequate for running. Given that you can see where you are going, the design features I look for, in order of importance, are:
1. Can I turn it on/off with frozen/glove covered/ frozen, glove covered fingers? This means, does it have a big, squashy on/off button (GOOD) or a tiny, hard and hard to slide button (BAD). Easy to see whether this is the case.
2. Will it stay in place on my bonce? Not so easy to figure out in the shop, but a pain when it doesn't work out.
3. Does it have a rechargeable battery? I bought a Lenser H something or other that did, and have been caught out more than once by it not being charged. The tunnel on the VF Trincee was one of those occasions. I'd rather have a normal battery.
*mostly. When the "path" is just rubble among acres of more more mining rubble, I have gone astray, as I also have if it enters a vast field where the exit is way yonder, deep in the glooming, but who knows which way. That doesn't happen often, however.