In reply to alastairmac:
I just bought a petzl reactik+... its a great little unit.
- It's a nice, small, cool looking and rugged little device... waterproof, lightweight etc.
- for a compact one piece, it's way brighter than anything i've ever used: 300 lumens, very crisp, white light.
- has a usb rechargeable battery unit, you can get a housing for 3x AAA batteries as a spare, so covers all bases there.
- numerous lighting modes, but has some very reactive settings, meaning it detects how much light you need. This can of course be overidden with quite a few presets.
- Comes with a phone app. Connect to your phone with bluetooth to make your own lighting profiles and get various info i.e. battery life. It can also do some more useful things, like program SOS morse code flashes.
- reasonable cost - I think I paid about £60. which i think is very reasonable for the above specs!
Give me a shout if you have any questions dude, I'll help if I can