Get Some F**king Lights

Can anyone recommend a powerful front light that doesn't use a separate battery pack? The street lighting down here in Devon is non existent!

I've used a Nightrider 600 all last winter and back on my bike this weekend, not the cheapest but definitely feel safe on unlit roads. My model is now obsolete but they seem to have a new model out:

http://www.wiggle.co.uk/niterider-lumina-500-cordless-light/