Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Lidar - How is this device against Lidar? That since it is a large investment.
Document: I have this in all 6 of my families cars, and since getting the Valentine, no one has had a speeding ticket in the 3 years I owned the units. Simply a perfect device, especially if you have a sports car that you like to drive fast.
Yes, I have owned the same Valentine One unit since July of 2000. I will try to keep things short and sweet and I am basing my thoughts only on the 11 years of experience that I have with this device and not Amazon's prices or selling practices.Let me start by saying that I absolutely love the device. In the 11 years of service and the many times that it has saved me from a ticket, I estimate that it has paid for itself at the very least 10 times over.
Because it works as well as it's advertised and the Valentine One gives you plenty of warning. It is a great investment.
Well worth the investment. Love that it tells the direction of radar/laser. I see why guys who use Valentine swear by them.
This device is the best one in the market. Detects from long distance with origin direction and is accurate.A must have in every vehicle driving!
Actually it was more that what I expected from This deviceI'm so happy to use it, currently I'm using this V1 in Saudi Arabia in RiyadhAnd it works very goodYes I recommend this device
I've never had to update the firmware of the device either. It just works perfectly, so I don't have any plans to. For those that think it is too sensitive, you need to tune the device and tune in to the device...so you can understand its language. The V1 really makes you a more aware driver. It will tip you off when emergency vehicles are coming your way...heck, it even chirps when a yellow school bus is rolling up.
For you city folk and those who live in heavily populated areas AND can understand and use technology the 9500ix is for you. Less sensitive on the wide open road but has all the features required for people who travel the same route each day in and around the city or populated area. GPS enabled device, when your detector goes off you look at it, it alarms and displays your mph, speeding again.
It is a very expensive radar locator. Check it a lot before spend your money, as I did. If the radars in your area are piezoelectric or the police use Laser Gun Radar, forget this Valentine. It is useless for piezoelectric and probably useless for Laser Guns because is so hard to get Laser Guns that practically doesn't work.Other way if you like to get Banks or Supermarket doors, this is the right device, because stay all the time bipping for these bands.
And to all of the people complaining about getting tickets: THIS DETECTOR DOES NOT GIVE YOU THE UNAVOIDABLE ADVANTAGE TO GO 100+ MPH ON THE HIGHWAY OR BREAK ANY OTHER LAW. If you expect any detector to pick up everything you encounter with a good enough time to react, then you have unrealistic expectations. This is only a device that is supposed to help you adjust your speed accordingly when driving.
Answer: LIDAR detection is excellent, plus the device identifies whether the laser gun is ahead of you or behind you. Tip: keep at least one car ahead of you in city driving. The V1 will report LIDAR used against the car(s) ahead of you so you can react. I was the lead car from a traffic light and got caught by LIDAR, and there was no escape from that one.