I've just bought yet another head torch (reckon I've had well over a dozen over the years). As ever, depends what you want if for / what your budget is...
If you want something to get you back to the car or to gralloch by, a Petzl Tikka or similar ( go to B&Q or a garage) will do fine. If you want something to scare the birds roosting in the next county, or more practically to find a runner in cover, then I can thoroughly recommend the LED Lenser H7R 2 . This was my most recent purchase and it is very good - the beam is far and away better than anything I have had before. Because it's rechargeable (USB), I can just plug it in to the fag lighter in my car when I've used it, then stick it back in the roe sack knowing it is fully charged for the next outing.