bag over axle or what?

Im going to be installing a 2link on my truck and i've noticed to different types of installs. One is the bags over axles and the other one has the bags on the 2 link bars? maybe.. im not to sure. im just wondering what the best setup would be?

since i really don't know how to explain it

www.ihaterobin.com/1.jpg and www.ihaterobin.com/2.jpg