As you can see, you're gona find very different opinons on this bro and probably conflicting and/or lack of evidence which aint gona help you much...........my advice, scan the internet for independent reviews and try and find people in here who actually use them. Radar Direct might be worth making a call to but keep in mind they'll have a vested interest in telling you what want to hear. Just get as much info on laser jammers as you can before sinking ur $$ into 1......... and if you do buy one..........maybe you have a cop mate who's happy to fire his laser at you down a quiet back road ;D