I have been with JM for 2 years. I do record all his picks and plays but I have never played it for real. JM is not a crook, he has put together his chase systems based on statistical analysis. They do work up to the point and good thing he is developing them all the the time ,so they have become more advanced over the time. If you use JM system, don't be a lamb, play in BM, in other books that allow higher limits, don't use BetUs for that matter. I think that JM has a deal with BetUS that he can take them for 200-300k/year as long as he brings in new lambs to be slaughtered...If you use your head , JM can be quite good ride.