Typically, 3D capability tends to make HDTVs more expensive. Web apps can also jack up prices. And LED backlighting usually pushes prices up even more. That's why Sony's KDL-46EX720 is such a refreshing surprise. One of Sony's first 2011 models available, this 46-inch set combines 3D, a ton of Web apps, LED backlighting that gives it a thin frame and eco-friendly energy-consumption stats.