Suggestions:
In the first paragraph, instead of simply saying, "a nice lighthead.", I think you should be more specific, saying something like "It features a nicely styled, single lighthead with three LEDs."
Second paragraph -- instead of, "Each of the three LEDs come with their own switch that operates independently.", it should read, "Each of the three LEDs comes with its own switch that operates independently."
Maybe you could be more descriptive of the materials too. Is that an anodized aluminum front bezel? Is the back molded of solid plastic with a rubbery feel? That integrated rubbery band can be a plus and a minus.
In the Bottom Line section -- instead of, "There’s a lot of light levels and the flash mode works well for commuters. But on the trail, it’s not quite bright enough and some usability issues hold it back. The amount of light the rider gets for the money is not very high. Also, some of the design issues like the switch hold back its trail usability.", try the following, "There are lots of light levels and the flash mode works well for commuters. But on the trail, it’s not quite bright enough and some usability issues hold it back. The amount of light the rider gets for the money is not very high. Also some of the design issues, like the switches, limit its trail usability."