I am sure they will get better. As I pointed out, the 2002 version only claimed to detect a parallel fault (basically a short) inside the wall, not in the line cords on the load side of the faceplate. It was basically looking for spikes in the 60-70a range. There have already been 2 major improvements since then.
Like every other bleeding edge technology, the pioneers take all the arrows. I will wait until this settles down, the product starts actually starts doing what it promises and the price drops. I only wish NFPA had the same restraint ... but I suppose it isn't their money they are making people spend to beta test for CH and SqD.
