This isn’t exactly true. Even in instant on mood, the radar guns still puts out a RF frequency that the better radar detectors can pick up, but as soon as the radar detector goes off saying there is "instant on" in the area you better slow down quickly. The police radar guns can’t be “turned off” and right back on to get your speed. Once you turn the gun off and then back on it goes through a BIT test, and this takes on the norm about 10 to 15 seconds. So, the guns are in standby mood for the lack of better terms when they are using the instant on detection.
One thing about detectors that have laser detection… If your detector picks up a laser it’s all ready too late. Laser guns put out such a small beam it can’t be picked up in the air like X, K, Ka bands. So, yes detectors can pick up the laser, but only when it’s aimed at your car, and by the time it hits you and back to the gun it’s over, and you’re getting a ticket if you were speeding. I was an Electronic Warfare Technician in the Air Force so I know how radar works, and how they can be defeated or not. Bottom line on radar detectors just like with most things in life, you get what you pay for. The two you mentioned are very good, but like you stated you’ve already done your research and found out what the test results were in a head to head comparison. If money isn’t an issue, then go for the best out there, and enjoy the speeding. Until you get caught, I’m pretty sure most of us have been caught speeding even with a radar detector. I know I have.
