I bought a couple different Monstrums and they were good. It all comes down to the use case, do you need the rings to storm the sands of Iwo Jima? Or is this a plinker, is this for a rifle that you are going to shoot competitions? If your life depends on these sure the Geissele or Unity Tactical will do that. But for non critical situations the Monstrums work.If you’re not a snob, Amazon has some Monstrums for about $30.