So far, the JetBeam HC20 seems to be the best “bang for the buck.” The HC20 ($28) is second only to the Crelant CH10 ($25) in price. The HC20 also comes with a 2400mAH 18650 battery (which would run you another $10). From the specs, I like that it has a rather simple mode setting (3 modes: 800, 260, 15). Unfortunately the head lamp has thermal protection built in, so it steps down from 1.8A down to 1A after about 2 minutes of run time on the high mode (800 lumens). In other words, the posted 4 hours of run time on the high mode is not continuous run time. From the review posted below, the user only got about 2-2.5 hours of use on high mode (that’s using the JetBeam supplied 2400mAH battery) following the step down.
You can find a great review of the HC20 on this forum from Sirius 9 (click here).