Silva/Brunton have a LuxV headlamp with a rechargable battery pack. A media report on outdoorsmagic.com suggests that Silva have fixed several problems noted with the L1(lux3) such as the button, too tight a headband, and have added a clipon diffuser.
I have a L1(lux1) but same form factor, and have found it very good, comfortable, good balance of brightness and runtimes, the external heatsink is a nice touch.
However, how long will this remain the brightest headlamp if the Cree 7090 XR-E makes it into headlamps?