I have one. I like it. The Eagle 4 sits next to my pistol, beside my bed. It is as bright as a SureFire P91 and is supposed to run for 1 hour. It has a larger hot spot than a P91 even though it has a larger reflector(1.75). I still have my first set of batteries after 3 months. So, I cannot tell you how robust it really is, or what the real runtime is. I got it for $69 plus shipping. The Eagle 4 tailcap is a clickie. Push in a little and it comes on, push in harder and it will click and stay on, until you click it back off. My tailcap does not have the LEDs but does feel a bit too large. It is a chunky piece. At the same time I bought the Eagle 4, I converted my SF Z3 into a Z4 using an extender and a Digilight 4 cell lamp assembly. It is 10% brighter and it still of course has a 1.25 size reflector. It has a tighter/smaller hot spot than the Eagle 4. My Z4 fits in my pocket much better, and with a smaller hot spot, it is better for outdoor use. You can buy a 4 cell Digilight flashlight from them for $99 that will be virtually the same as a Sure Fire 9P with an extender. I like the Z4 a little better, but, for a "beside the bed light", and at $69, the Eagle 4 is hard to beat.