Check out these test results:
http://www.guysoflidar.com/radar-det...rld-tests.html
V1 consistently rates at the top. The reason you don't see test results from anything earlier than 2009 is the technology the cops are using hasn't changed significantly since there.
At this site, you can also find good info on laser jammers. Yes, illegal in Texas. The Laser Interceptor ranked top consistently. If you call them, family owned shop and very informative. They have a method for Texas whereby the unit becomes a parking assist at the flip of a switch. Funny story they'll tell you, in certain countries around the world these are so illegal the authorities will confiscate the vehicle. So they have a switch that wipes the software clean, it cannot be proven what the unit was. When you get home, you'd have to re-install the software to make it operational again.