Can anyone recommend a higher technology HB LED flashlight? Maybe something in the 200 - 500 lumen range? A focusing flashlight would be nice, with a uniform beam (no rings, not a lot of overspill needed). A high efficiency controller is preferred - probably a microcontroller-based synchronous boost-buck constant current DC-DC converter. For high efficiency, I'd like an anti-reflective coated lens using a TIR lens (no reflector). The HB LED and switch mode power supply should possibly use a copper heat sink. I'd prefer "common" (easy to find/easy to charge) Ni-MH AA batteries over hard-to-use Li ion cells. The batteries can be charged externally to the flashlight. I'd like two controls: an on-off switch in series with a mode selector - I want the needed mode immediately. I don't want to cycle through a lot of operating modes to find the one I want. I'm not very particular about modes, but low and high would be nice. Other features are not important to me (cost, size, weight, anti-roll, tactical, etc.). I just want a long lasting, easy-to-use flashlight that can throw light when and where I need it. Thanks.