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Manufacturers concede that early versions of the compact fluorescents did not meet expectations for light quality and longevity. Despite advances that have improved their performance, consumers still tick off a host of complaints about the squiggly bulbs: They take time to light up, they do not dim smoothly, they don’t fit with clip-on shades and, worst of all, they cast a harsh and unflattering light. They also contain mercury, raising concerns about breakage and disposal. LEDs offer a different proposition.
11/01 NY Times