Jolar wrote a review of Black Diamond Vectra IQ Headlamp on May 2, 2005
I haven't been able to find another headlamp which can match the features of the Vectra IQ for this price. I'm not a big fan of any sort of proprietary, impossible-to-replace-unless-you-pay-nearly-the-same-price-as-that-of-a-whole-new-product, rechargeable battery pack. You can find AA batteries pretty much anywhere. The three straps and concave battery box have proven comfy for prolonged periods; at least on my melon.
The combo "Find Me" and battery life indicating LED are great. It even reports the remaining juice separately for each of its seven modes. Obviously you'll be able to go a bit further with the 4 LEDs on "Strobe" than with the Xenon bulb on "Max".
Seems plenty sturdy too. Definitely one of the least ill-conceived pieces of kit I've purchased in a while.