Before purchasing any wiring harness the first question is it stock or is it a modified bronco that this harness is going in. If you're going 100% stock then you need to compair apples to apples.
If the AAW is more but comes with glove box and switches, how does the Centech compair if you factor in those missing items?
If your bronco is modified or resto-mod with all the wanted electical upgrade stuff,then I would look at this way. I used the Centech but spent days rewiring for all the changes that I had made, plus adding for the missing upgrades I made. I spent more for a plug and play harness that I could of saved a lot of money if I went with a more universal harness designed to be customized by the owner for his applacation.But a universal harness is not for the first timer.
If you are going modified and you still like the idea of using a plug and play system by one that's not already wraped in tape buy one that's zip tied and opened so its easier to pull wires and make changes. This is a big time saver.
Fifteen years ago when I bought the Centech harness they were the only players in town if you wanted a plug and play system, they stuck there necks out offering a harness for a vehicle that was a limited market. I guest my point that I'am trying to make is there will always be johnies come lately who will tell you there's is better. Again compare apples to apples.
If I was buying new today and know what I know today it would be a flip of the coin.