I live in the northwest subs of chicago and I am wonder what setting I should use for my V1. Also what setting would be best for the 8500x50. Wondering what freq. are used. I have the old 8500 setup up like this:

POP = Off
x = Off
SpecDisplay = On

Does Illinois use "X"?

According to this yes:

RDF Geographical Survey - Illinois - Radar Detector & Laser Jammer Forum

Also did I make the right choice with the V1? I Considered the Redline and the STI Magnum as well. I have watched countless videos on youtube comparing them and the V1s laser detection seems amazing!! But the falses are high!