In reply to gooberman-hill:
> I really rate the LedLenser SEO series.
I would second that - I've had an SEO 7R for years that was second-hand when I bought it (via a 'for sale' post on here I think). It's still great, even after I once accidentally put it through the wash with my running kit. It has a USB chargeable battery not unlike the Petzl thingamabob, that you can take out and replace with AAA's.
For running though, fwiw, I prefer to use a relatively dim head torch if at all and mostly rely on a handheld light. Being a big fat sweaty wheezy runner, when it's cold and humid I find a bright head torch just dazzlingly illuminates a big cloud of steam right in front of my eyes, and depth perception (esp around roots and other trippy uppy hazards) is better when the light source is a little further away from my eyes.