I just received my 8500 refurb today and I'm a little worried right off the bat....I know where my normal falses are for my whistler and 9500ix....I went out on a short drive to check out these areas. My understanding is the S7 has greater off axis detection so it would pick the Kband falses up quicker than the M4 9500ix which would alert when I was pretty much on top of the false. Same for whistler....I drove by the same places with the 8500 and it wouldn't even go off unless the RD was pointed right at the false door. This seems like a problem to me. Or am I wrong?