Ive got the following, Petzl e-Lite, Petzl Tikka Plus and a Princeton Tec Apex. Theyre all great in their own way. I highly recommend both Petzl and Princeton Tec.
I have 2 head torches; an Alpkit Gamma and a LED Lensor. Both are great but completely different beasts.
The LED Lensor has a long (ish) range beam, that dims and adjusts from spot to flood. Great for looking for run away pupils on residentials, or on the moors at night.
The Alpkt Gamma is great for short distance work, cooking, reading etc and with the advantage of red light to the rear for group walking.
HTH,
Simon
Simon, don't you rate the long range beam on the Alpkit Gamma? Seems pretty awesome to me...