Chiro is great the problem is finding a good chiropractor. We have tried at least 10 over the years and when we finally found a good one he moved to another state.
So at least we know a good one from a bad one, but for now had to settle for one basic one who uses the activator system just for my back, but can't help me with my neck.
I think you can read about it on http://www.activator.com
You can go through Dr.Sutter's posts where he gives suggestions what to look for.