I've got one of each of the Hyperblasters, 3D, 2D, and 3AA. . . these all have the Lux III, the standard now at EL, IIRC. The 3D version is very bright and has very respectable throw. Elektrolumens lights seem to me to always have some good throw vs. other LED's like SF's L4 (which is admittedly designed as more of a flood). The 2D is not quite as bright, as you'd expect, but still vastly superior to any 2 or 3 (or probably 4!) D cell maglites, and has a very nice feel. The small 1 D size Blaster uses a 3AA to D size adapter. . . the brightness on this little light is the same as the 3D version, very impressive! And not unexpected, I guess, since it operates at the same voltage. But the adapter is the weak point in this light, I think. . . there are some tiny, delicate pin-like projections that look as if they could easily be broken off. In addition, when loading my batteries for the first time, I "popped" off the bottom of the adapter. EL's new design 3AA-D adapters have supposedly fixed this problem, and I bought a few "extras" but haven't tried 'em out. All of my HyperBlasters have very white colored outputs, better than some of my older Surefire LED's and my ARC LSL.
Unfortunately I can't speak to much as to battery life. . . I haven't run out my first set in each light yet. I guess that sort of speaks for itself (I got them in July 04). But I tend to use the lights sparingly. The momentary on feature on the switch is good for this and is a "must have" feature for me (EL's new XM-3 also has it, my EL 4D TriStar does not, and EL's future Zorch apparently will not either, precluding it from my stable).
Overall, I really like ElektroLumens lights and highly recommend them. Looks like they may become more "available" in the future too, as Wayne has apparently acquired a manufacturing partner. My new XM-3 rocks!