I was part of the powerstack test group, and though it may be a little late, I wanted to post my results/opinion. Powerdrive did not have an overly profound effect on me but after I ran out I noticed how much I missed it. It seems to allow me to focus better which has been helpful because I’ve recently incorporated power snatches, power cleans, and push jerks into my routine and it’s helped me learning these lifts. As for M and Tribex I’ve been a big fan of them for awhile and always take them when I’m between Mag-10, 4-AD, and methoxy cycles. I think most we agree with me as to the effectiveness of M and Tribex, they should be the base of any good supplement program.