I own a Petzl Tactikka (4 x 5 mm LEDs) as well as the Petzl Tikka XP (1-watt LED). They are both very good headlamps. The Tactikka comes with a red filter which can be useful when you need to use the light near people that are sleeping, for example. The Tikka XP has a nice flood/spot toggle that is versatile.

The MYO XP by Petzl comes with a 3-watt LED but you will need to carry a small battery pack behind your head. Still a great light.

(justin2006, however, I have to disagree with you that these Petzl headlamps are not adequate for night searches. You should use something more substancial, such as a 3-watt LED Maglite. I did a search a few weeks ago looking for a missing little girl and i'm really, really happy I had my 3-watt LED Maglite.)