I have had excellent results with the cheap Ebay LED lights. One of my riding partners with a high dollar hid setup was kinda miffed when my $100 for two lights, four batteries, two chargers and a difuser lens outperformed his $1000 HID setup
Here is a link to one of the lights, this outperforms my visionX solstice helmet light, I was not happy when I shined them side by side, I paid 200.00 for my visionX, the vision X is heavier built, and has a better battery but I could have bought 5 of these for the same money.
^^^ I use this head lamp or one very similar, it's amazing for 30 bucks it's bright and lasts quite awhile before needing recharge. It's bright enough I removed the stock headlight and just use headlamp. And at 30 bucks your not too upset if you crash and smash it.