Personally I like two 9 ft doors better than one 16 ft door on the garage and of course a man door on the side or rear convenient to the house..
I do to all except....if you have a dually truck or a car trailer that you want to pull in. I can get my trailer in but it only has 2" on each side. That is many forward and reverse moves to line it up just right. My wifes nephews dually would not make it in. Just remember that a 9' door is not a 9' opening.