Ecova, an energy and sustainability management firm, was commissioned by The Institute for Electric Efficiency  to determine the market's best LED reflector lamps. TopTenUSA.org, a nonprofit organization that ranks products for energy efficiency, posted the findings on its website earlier this month.

The overall winner was a 17-watt PAR 38 lamp made by Technical Consumer Products (TCP). The lamp has a lifetime cost savings of $200, produces a soft, warm light that is similar to a haolgen incandescent and dims smoothly, according to the study released earlier this month. At the cost of $42, the lamp has a payback period of 4.1 years and an estimated useful life of 23 years...

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