Top of the line radar detector feedback?

After having the Escort 9500ci installed professionally a couple weeks ago in my IS-F, I can honestly say this thing is incredible. The GPS is especially effective at "learning" where the false alerts are all over town. The laser "shifting," or jamming, feature has also been activated and it's comforting knowing it's there. My alerts are far earlier than any window-mounted unit I've owned, and the voice alert feature is something I like more than I thought I would.

I've had no experience with the Valentine unit, but I have no interest in it since this one is really blowing me away almost daily.

Appreciate the feedback on this topic very much, though, but I'm just saying that I feel the money was well worth it. Best radar system I've ever owned, period.

Has anyone put one of these systems in a car yet? Thoughts?

I used to own a Valentine 1 long ago and then purchased a Passport 9500i about a year ago thinking it was better then the Valentine 1. The lack of false alarms is nice and so is the voice part, but I still found it giving me a decent amount of false alarms.
After a year of use, the auto volume function and auto dimming functions stopped working, which wasn't a big deal, I just did it myself. Shortly after that the GPS function stopped working on it, every time it would turn on it would say there was a GPS error. Shortly after those stopped working, the detector itself wouldn't turn on, and when it did, it wouldn't read radar anymore (I know since I tested it while working at the police department one afternoon). Now I could of just gotten a bad detector but I went back to my Valentine 1 and couldn't be happier, the arrows never leave you guessing like the 9500i did.
I've heard a few similar stories of some of the features on the 9500i going out over time, but it completely up to you, just wanted to share my experiences

I picked this up on "howstuffworks.com" and it chats about how the laser guns work. Trust me, here in Conn, state troopers use laser and I was going about 90 before my laser/radar detector picked him up and I hit the brakes pretty hard to only be clocked going 78 in 65. Lucky for me, I have a few state troopers friends so no ticket for me. Here is the article,

If you have read the article entitled How Radar Works, then you know how normal radar works. A normal radar set sends out a radio pulse and waits for the reflection. Then it measures the doppler shift in the signal and uses the shift to determine the speed.

Laser (or lidar, for light detection and ranging) speed guns use a more direct method that relies on the reflection time of light rather than doppler shift. You have probably experienced the reflection time of sound waves in the form of an echo. For example, if you shout down a well or across a canyon, the sound takes a noticeable amount of time to reach the bottom of the well and travel back to your ear. Sound travels at something like 1,000 feet (300 meters) per second, so a deep well or a wide canyon creates a very apparent round-trip time for the sound.

A laser speed gun measures the round-trip time for light to reach a car and reflect back. Light from a laser speed gun moves a lot faster than sound -- about 984,000,000 feet per second (300,000,000 meters), or roughly 1 foot (30 cm) per nanosecond. A laser speed gun shoots a very short burst of infrared laser light and then waits for it to reflect off the vehicle. The gun counts the number of nanoseconds it takes for the round trip, and by dividing by 2 it can calculate the distance to the car. If the gun takes 1,000 samples per second, it can compare the change in distance between samples and calculate the speed of the car. By taking several hundred samples over the course of a third of a second or so, the accuracy can be very high.

The advantage of a laser speed gun (for the police anyway) is that the size of the "cone" of light that the gun emits is very small, even at a range like 1,000 feet (300 meters). The cone at this distance might be 3 feet (1 meter) in diameter. This allows the gun to target a specific vehicle. A laser speed gun is also very accurate. The disadvantage is that the officer has to aim a laser speed gun -- normal police radar with a broad radar beam can detect doppler shift without aiming.