I have used Dyna Beads in all tires since 2013 and have been very happy with them. I will be getting new tires this summer and will use them again. I have only heard great things about Centramatics.
I have been using the M&G system for 13 years and have never had any problems. I just purchased a new Grand Cherokee and I am installing the M&G 2.0 system on it.