Dramatic lighting, a shimmering waterfall and silken sails wafting overhead will distinguish Saigonique, a midpriced Vietnamese, when it opens in Arlington’s Shirlington Village at the end of the month; it will serve the beautifully plated curries, soups and noodle dishes that have made its sister restaurant, Bethesda’s Green Papaya, a popular spot for an upscale dining experience that doesn’t break the bank (4251 Campbell Ave.; 703-575-9797).