V1 is a better radar detector than the Passport 8500, but I like some of the features of the Passport 8500 over the V1. The Passport is smaller and sleeker and basically looks much better in my car. Also, I like how when I first got the Passport 8500 I was just able to open it out of the box, plug it in, turn it on, and it just worked (in Auto Mode) flawlessly. The V1 is a more powerful radar detector, but it gets way too many false alarms...the Passport 8500 weeds them out. I am sure the arrows of the V1 is a great feature but for me, whenever my Passport 8500 goes off, I slow down, no exceptions. I have had my Passport 8500 for several months now, and I have been very happy with it.