I have 2 Matrix Pro IIs. One in long action chambered in 7PRC and a short action in 6.5CM my wive runs. I love the bag rider and the balance. Mine are both balanced without any weights right in front of the Maxwell. I would add a mag blocker to it and call it a day. The ACC Elite is pretty sweet too, and I will have one on my next build if I don't go KRG, but I would not get rid of my Matrix PRO IIs. I really like the wide base, some people with smaller hands don't like it as much due to being more difficult to move around. Don't have that issue.