I am going to weigh in for the M&H side. While I will concede that the AAW kit was tempting, I went with M&H and had no issues at all. All the harnesses were great reproductions of the originals, with all the connectors already installed. So the crimper and the soldering iron stayed in the drawer. I figure that they both would have ended up costing the same at the chiropractor (if you're over a certain age ), so I went with the plug and play.