OK, the many great reviews here have convinced me to give the Scalarworks Sync mount a try on my M4. I’m not a big fan of a “busy” sight picture but so many positive comments here must mean that owners are happy. I notice that the Scalarworks is offered with the RMR or SRO optic. I’m not sure what the difference is between the two or what the Scalarworks mount will mean for the sight picture of either one. Any advice or suggestions?