When it comes to moving an affluent family, there's no better BMW than the X7, the brand's luxurious three-row SUV. While its cargo area and rearmost seats aren't as spacious as rivals such as the Jeep Grand Wagoneer and Mercedes-Benz GLS-class, the Bimmer boasts better driving manners as well as an impressive selection of engines. They range from a 375-hp t...