I've used anything between Trijicon 4x to an aimpoint but most recently is a Primary Arms 2.5x and a RMR slant mounted. To me this is the best setup. The PA has just enough magnification for sight requisition and it has bullet drop compensation so it's perfect, good clear glass. Plus using the RMR is seemless and feels very natural on the Tavor when I pivot the rifle to the left and bam I have a dot.