I have one of the LED Lenser head torches mentioned above. It's my work head torch so gets abused. The first one failed at the cable point into the battery compartment but the present one is going strong.That looks good. IIRC LEDlenser gets good feedback regarding durability too.
I'm put off by the lack of data on run times, and the Fenix HP25R seems (compared to the slightly dubious data I've been able to find on the LEDLenser) to have more efficient lumen-minute performance.
On full beam it is mighty bright and I'd say the product data in the link above is fairly accurate in that I get about 6 hours on full beem with a full charge. I love so many aspects about it. You can adjust the light spread, intensity easily. It can take AA batteries as well as the rechargeable one supplied. The rechargeable battery can be topped up either via a USB port or plug top. I usually charge mine in the van via USB (think there might be a 12V cigeratte lighter cable too).
I'm personally finding the weight of the battery pack too much, but that is a personal thing. That said it comes with a cable so you can wear the battery pack on your belt or put it in a pocket to keep it warm.
The only genuine negative I have found is that the on/off button is too easy to accidentally turn on when in my bergan.