Commuter lighting options

Hello

Sad to say, the nights are drawing in. Soon, it will be dark on my way home. Before I need them, I am in the market for some decent lights.

My commute is all off-road, 12 miles each way along muddy towpaths.

I have an LED dynamo light; I was thinking about building a dynamo wheel, possibly with some kind of drum or roller brake, and relying on that alone (I have quite a good LED dynamo light somewhere). But I think light output will be an ask for a 3w headlamp. It's very rooty in places, and coming off there is a 50% chance I will have to swim.

So, what's out there? I was thinking maybe something lightweight and fairly focussed to strap onto my helmet, with a more diffused light mounted to the bike (and possibly another spot on the handlebar). Cheap Ebay ones are fine, but I need reliability. I will spend up to £120ish.

How about this:

http://www.ebay.co.uk/itm/Super-25w-HID ... 2a247545b0

and this:

http://www.ebay.co.uk/itm/Hope-Vision-1 ... 27cc8c3dc3

I have mains at each end, so can recharge batteries. But let's assume we need three hours runtime, sometimes at temperatures below zero.

I bought three of these:

http://www.ebuyer.com/364226-led-bike-light-mj838b

One to mount on the helmet, one for the bars, and one spare.

That ought to do it.

Bike dynohubs are typically 3W I believe. The latest are optimised for LEDs too. The Shimano XT one is 3W and around £55, which seems a good deal.
http://www.bike-discount.de/shop/a8806/ ... tAodAz4A7Q