Just got two of these at a gun show today at the Del Mar Fair in San Diego County, CA for $20 each (it ends tommorow). Took them on a hike tonight. While they are probably about as bright as they get in that size, I guess my other lights spoiled me on brightness, runtime, and tint. It was foggy so I had to use them on high. Runtime on an alkaline didn't get me through half the 6 mile hike. Next time, I'll use lithiums or Eneloops, or use a different light. I don't think these are best for long hikes, however for EDC around town and for a backup light for backpacking and camping, they should work great. I had a Fenix TK11 R2 and a new Inova XO to compare them to. The EOS was just a little dimmer than the TK11 on low, and about half as bright as the Inova XO. At home, it seemed about as bright as my LRI Photon Rex. It's a pretty nice light considering the Fenix light equivalent is over double the cost and I don't need strobe or S.O.S. in that type of light. I like the better spread of brightness settings as well. That low low will be an asset in an emergency. Not even my Fenix EO1 will run 50 hours (even on a lithium battery).