I really like my jet designs phantom helmet light. It is very bright and cars definitly know Im there. I use it on and off road and I can ride as fast as I want in either condition. For road riding I would probably go with the handlebar mounted version called the starfire, as dust and rain causes vision problems with helmet lights. The durability of the jet lights is outstanding, and the run time is about 3 hours. They both can be found for under $250.