Certainly not an expert,but I am a fan of the Leupold or older Redfield mounts. I am gradually changing all of my scoped 99's over to Leupold mounts. Not sure how a 2 piece system would be easier for you to set up than the one piece system. I did have a non factory drill and tap on a G that was miss aligned where the only solution was a Redfield 2 piece base. Love the Leupold/Redfield rear base adjustment system.