I use a Zebralight H600 for night hikes.
http://www.zebralight.com/H600-Cree-XM-L-750Lm-Headlamp-18650_p_72.html
750lm on turbo for those times when you need to see a bit further to get your bearings and just over 2 hours use in the high mode of 420lm.
Absolutely fantastic torch.
If you want something lighter and AA though the new H502 is another fantastic light, it has a LOT more flood which i find useful at the camp.
http://www.zebralight.com/H502-AA-Flood-Headlamp-Cool-White_p_91.html
The H502 puts out 260lm or more if you use Lithium batteries, yet weighs only 78 grams with battery and headband.
Both great torches, but for hiking i prefer the H600, here's a size comparison of my 2.
And compared to my SC600
Cheers
Mark