I was following a link from ETS once and ended up on an SAR web site for down under; New Zealand I believe. The article noted that their kits have standardized on the LED Lenser H7. I bought one and have been quite pleased.

Mine is 3 AAA, 200 lumens, dimmer switch down to 3 lumens, and a focusing and tilting lamp head.

The current version is the H7.2. Four AAA, 20 to 250 lumens.

http://www.ledlenser.com/880002.html#start=5