My personal process of elimination.
#1 is well done. Lots of detail work most people won't see. I love it.
#2 is nice but nothing that catches my eye
#3 is very nice but the trim paint isn't smooth and doesn't accent well. Nitpicking yes.
#4 is really cool, love the little extras, but my eyes keep focusing on the front tires with flash, and the one coming off the wheel.
#5 is my pick for best build. Its well put together. The aluminum looks realistic, and there are nice extras. The glass looks clean & clear. Just a nice build.