Read my CygoLite DualCross review.

The only difference between the DualCross 200 and 300 is the charger. The 200 has an overnight charger and the 300 has a 4-hr charger. The Li-Lion (or whatever it's called) has a battery approx 50% the size but with comperable run times. You're not paying for a brighter light itself for any of the three DualCross models. Just the charger for the 200 and 300, or the smaller battery on the other.

Since that review I did take it out on a late-night ride and it lit up the path/road in front of me better than I could've ever expected it to. I could see a solid 50+ feet down the trail while still seeing directly in front of my front wheel. Granted, the trail/road surface was dry, but even when wet it's a far cry brighter than the 15W NiteRider I'd borrowed from a buddy earlier this year. The light pattern spreads side-to-side more as well, which to the best of my knowledge can't be said about even the new NiteRider lights, much less the 3yr old one I'd borrowed from my buddy.

The DualCross 200 is (or at least was) $130 at Pricepoint.com. $160 at Performancebike.com.