Have to agree with foolsoft. I just received my Olympia and Duo from Jim and wow the quality of the lights are awesome. I went on a short run and was amazed on how well they worked. I set both lights at 50%, 80%, 100%, and 100% on strobe. The duo on 80% was more than enough. The Olympia at 50% had nice throw and enough for me. I'm running a 2/4 cell setup and for under 300$ I don't think you can go wrong.