You definitely want a bright light you can strap to your helmet or wear on your head. A secondary flood light on the handlebars would always show you where the bike is headed and help you with a way out when the path is suddenly not looking good. As far as particular lights, that's all according to your budget. The $10 led lights at dealextreme and meritline are great until they break. Usually one drop does it or the switch or head just gives out. They gladly send out replacements if it hasn't been too long since you purchased it, but the replacements last about the same. I just ordered 4 different universal mounts from Meritline, they should arrive by the end of this or next week. I learned a lot over at candlepower forums, there's about 5-10 brands that make quality lights, fenix being one of them.