Working the night shift I often cut through the forest at night and I use a smart lunar and 2 1600 lumen Ultra fire lights that cost me a tenner each. These have a good adjustable beam too, and produce more light than a friends £250 set up.
I am fresh back from Nendaz in Switzerland and have a friend who runs mountain bike hire business there - beautiful KTM bikes. Anyway, he is running training weekends for the Grand Raid and packages for the event weekend if anyone is interested. I am going to take a look this year and compete next year.