Originally Posted by cyccommute

For a nice, small, light light, look for the NiteRider NR 50 Sport. It's made for using with c or d cell batteries. It has only a 5 or 7 W MR-11 bulb in it but it's also pretty cheap...about $50... with the mounting hardware and cable. But you can swap out the bulb for a 15 or 20 W MR-11 (about $3) and have a great light. I use the NiteRider heads all the time and they are very rugged and nicely weather proof.