Before you look at the MAGWA1160 you might want to look at the MAG951. That's a 951 lumen modded Maglite 3D - 951 true torch lumens is output. The MAGWA1160 using the WA 01160-U bulb will produce about 450 torch lumens and with the Standard 2.5ah Nicad pack it will only burn for 30minutes before needing a charge. You will need to get a set of high current NIMH 1/2 D's at about 3.5 - 4.0ah which will give you about one hour. The MAG951 runs for 40minutes on 9 x AA nimh Titanium high current batteries and puts out an amazing beam - I used mine in Papua New Guinea this year on a mission trip and it was illuminating banana trees 300yds away using a stippled reflector! cost is about $200 but you seriously can't beat it for output - to get more lumens you will need HID which can take up to 30 seconds to light up and cost $$$ for replacement bulbs. To find out more go to the high road forums and look up up Black Bear's post on the mag 951 - he is an ex watchmaker and his product is class leading - in the Surefire quality ranks.
-LT