I know this forum is visited by the most knowledgeable optics folks around. I am looking for a good optic for short range shooting, say out to 200 yards, for my SR556. I have been looking at Eotech, Sig Optics and Vortex dots and I guess tactical scopes. I'm trying to keep it under$500. The highest magnification I have considered thus far is 4x. Any light you shed would be greatly appreciated!