It would help if you guys told us what conditions you use your lights in. For me, I would be on a mixture of lighted neighborhoods and pitch black country roads. So I need something that is usb rechargable, has more than a 2 hour runtime, and is bright enough to light up the pavement well enough to see cracks in the road when I'm doing 20mph on a dark backroad. I've narrowed it down to the Knog Road 2 (or 3) and the Cygolite Metro 500. Any I'm missing that will fit the bill?