Well the answer is NO! I am NOT disappointed in the E1e that I got today. With the EO-E1R lamp running on 3.6V RCR123A batteries, it's very bright with beautiful beam. Throw is on par with my EX-10 GD, and brightness isn't that much behind it. Man, I love the warm color of that EO-E1R, its just so nice compared to the "cold" beam of most of my LED lights. I also bought a KX1 dual output cree head for my E1e. With the LED head installed, running on 3.0V Soshines, the little light is also great. On high its not that much behind the EO-E1R and on low its still very useful. Works fine on both low and high with the 3.0V Soshines by the way, no strobing or flickering ect. I love the fact this light is not picky on battery size. Using the LF bulb, it used protected AW, UltraFire, and TrustFire all equally well, while my EX-10 will only fit the AWs, as the other protected cells are just a tad too long for it to work well with them. At night comparing the E1e to a EX10-GD I was very happy with the E1e using either head. It has great throw, larger spill, and is close enough in brightness to the EX-10 that I am not unhappy at all. I was really expecting more of a difference between them, but the little surefire must make the most of its lumens, as it seems little different in actual use outdoors or indoors. By the way, I had a septic tank "emergency" tonight, pumper guy came at 9 PM or so, and I got to use my new E1e with the incan head for about 45 minutes, and then the LED head for about an hour on high, in light freezing rain no less while we worked! It's one nice little light, I am glad I tried it:twothumbs You guys should have just told me how nice this light is!