Supposedly every radar testing site out there is slanted towards one manufacturer or the other. I've always owned V1, partially due to hype, but I also know it works for me. I LOVE the arrows, and that is the V1's saving grace for me. Valentine is really falling behind on the little creature comforts, like the mute on the cigarette lighter etc.. But I just can't give up the arrows. I've used an 8500 for a little while before and just couldn't really get to trusting it. My buddy had one of those bumper mounted super expensive (1000+) setups in his Viper and you could barely hear the thing. Needless to say he got quite an expensive ticket and went back to his V1.