Edmunds review is accurate, and others must share their opinions. Because 5 series GT's are hard to find, I ordered a 2014 550i xdrive. I like it because it is a large, comfortable, powerful sedan, that converts into a large trunk when needed. In my case, that's about six times per year, and I hope BMW keeps making them.
After two years and over thirty thousand miles, I'm very satisfied with this car. It's functional and fun to drive.