I've had 5 head torches over the years, and have been using the Tikka XP for a year now. This is the best I've used - great beam when you want it, with lower power options for in the tent etc. The diffuser is a good idea when you need softer, wider light. It's not too heavy for walking, and seems robust and well made so far. Changing batteries is a bit fiddly and best done in the comfort of home rather than on a dark night!
(Written by: beorwulf)