I have the IQ Premium Cyo light from that page and it really is good. While all the battery high-powered lights through out a huge beam, very little actually hits the road. With this light almost all of the light hits the road. When I first put it on the bike I kept my battery light on the bars, but took it off after a few rides as I realized how redundant it was. With the two lights on I couldn't detect any light coming from the battery light, it was all washed out by the B&M light.

This comes at a price though. For $110, now $121, it isn't cheap. And if you add in the dynamo wheel it is even more. I spent the money and feel it was a worthwhile upgrade but I'm not sure everyone else would.