Thanks Watchmaker, once again, for all the great information!
I found a light made by 4Sevens, and it seems to be made by the same people that make Fenix. (or at least they are closely related) Anyway, I got one of the Fenix lights and it was great, but now this new light, the Quark Tactical, seems like it's going to be spectacular.
http://www.4sevens.com/index.php?cPath=297_306
Dimensions (for the 2xAA model)
Length: 5.8 inches
Diameter: 0.86 inches
Weight: 2.2 ounces
Typical Output and Runtimes
Moonlight: 0.2 lumens, 30 days
Low: 3.5 lumens, 5 days
Medium: 18 lumens, 24 hours
High: 70 lumens, 5 hours
Max: 170 lumens, 1.3 hours
Strobe, 2.5 hours
Beacon, 18 hours
.