The MiNewt @ 600 lumens is getting good reviews. Then get a cheap,bright, flashlight for the helmet. Lights at different angles show different "features" of the road. Go to mtbr.com if you want to read about lights. The 2012 shootout is in progress and you can see beamshots of many lights, including some of the lower power lights. The Magicshine gets good reviews, but from all the posts I've seen, quality may be an issue. I've rarely seen people complain about quality of the major bike light brands. I don't like external battery packs.