The APA Gen II little bastard is a very good brake as well. A buddy has one on his Ruger Precision Rifle and have been around q bunch at matches. They both are easy installs but the major difference between the two is that the little bastard directs a lot of the gases back at an angle at the shooter. The mad scientist has a flatter baffle and while still controlling recoil very well it also sends the gases straight out as opposed to back so you get less blast. Just something to think about for the OP.