When buying stocks, investors should focus on those that outperform the market. Even though the market eased in choppy trading last week, some leaders scored gains and are in buying range. Telecom services provider NeuStar (NSR) is in a buy zone after blowing past a 41.41 buy point in a cup base Dec. 11 in nearly three-times average trade. Although it pulled back in the latest two sessions, it did so in roughly average trade. The stock has now