The midsize family sedan remains the biggest-selling segment in the U.S. car market. We took 10 (yes, 10!) of them and put them through several days of testing. They had to cost less than $27,000 (including destination) and get at least 28 mpg combined to make our cut. See what our experts, along with experts from USA Today and “MotorWeek” and a real-life family, chose as the best.