There are Pro's and Con's with both set-ups.
EZ Wire, is cheaper, takes a bit longer to install and you have to terminate.
On the PLUS side, it also allows enough cable to route the wires as desired.
As for AAW, they are pre-terminated and the finished product is nicer. But your restricted to the lenghts provided. A factory wire run, no extra to hide or re-route.
I can see the benefits of both kits. I am not sure which one I will be using but because of the good info in this thread I am leaning to the AAW kit.
Thanks!
Eric