They are worth it to me on the radar aspect of it because i picked up a 10 dollar laser/radar detector off of craigslist last year and its worked out beautiful for the radar detection when an officer is stationary or moving...it sucks for laser though. Radar sends a wide beam that the radar detector can easily pick up but for a laser to do its job it has to hit a physical point of your vehicle that by the time the laser hits your car and the radar detector goes off its too late. My theory is to never just trust the radar always be looking out because it could take a crap that time and you end up getting a ticket.