Hello, I recently purchased the R7 and came here hoping to get some info on settings I should use for my area. Currently, I mostly have Vortex's settings but today on my way to San Antonio from Houston there were several black SUVs marked as sheriff (could barely see the label) that gave out zero reading from my r7. Only reason I was able to find them was because waze alerted me. I will see you guys around and hopefully I will learn lot of things about the R7.