Maison D'Optique peddles scores and scores of exclusive eyeglass brands--from Oliver Peoples to Chanel, from Paul Smith to Robert Marc. We especially covet the platinum- and gold-plated frames by Lunor. But the best thing about this branch of the four-person chain is the knowledge and expertise of its co-managers and sisters, Cynthia and Christine Date. After 14 years in the business, they know what they're talking about and they're not afraid to share their opinions. "We'll tell people right away what looks good with their face--and what doesn't," Cynthia says.