I have the V1 and am pleased with it.... the police in OR are mostly running with their radar on while driving... I am frequently surprised at how far away I pick them up... especially out in the open places...
But I will admit that I dont rely on it to keep me completely out of trouble... just to let me know they are around.... I tend to run at about 10 over the limit on the hiway and dont want any tickets.... I cant remember my last speeding ticket.... must be close to 20 years?
Pick the one that suites you and your budget and drive safely....