Me and proudnma got together and did some testing. We did lots of testing on my car with adjustments to the blinder m47. Two front and two rear.
We used a PL2 software 5.08 and a LTI 20/20 first gen that had just been tuned and repaired.
I was shooting and he was driving my car.
On the front I was JTG on both guns, the only time I got a PT was at 54 feet when I was aiming at the drivers side mirror.
On the back it is a little more difficult to explain. CM aiming at the plate I was JFG with both. Aiming way to the outside on the drivers side tail lamp I was getting PT till about 300 feet with the 20/20 and then it was JFG from there. The reason I was getting PT on the back is because both heads are basically centered over the plate. I was JFG with the PL2 on the back no matter where I aimed at.
I can tell you that the 20/20 is a very good gun, I can get a reading past it's maximum of 2000 feet, it worked very well.
We also did some detector testing, using a Talon 35.5. We did redline testing where we learned that I could easily beat the redline with q/t without even trying. The gun we used had the auto track after lock 5 second function in I/O and C/O if you hold the trigger down. The redline did perfectly fine with both of those.
We also tested the pro78 whistler and found out that with pop on I can't beat it with Q/T but with pop off I can. What we did is do a factory reset and only changed the pop settings during testing. Also we found that in our situation pop on actually got it a few more feet of detection, but the majority of the pluses came from q/t detection.
We also testing a v1 3.872 and I could not beat it with Q/T and it worked great in I/O and C/O.
Lastly we did a few 90 degree off axis run with the 35.3, using his redline, his 3.872 and my 3.864. The redline beat both but not by a ton. In one direction I would say by about 100 feet and in the other direction my v1 was right there with the redline while his 3.872 it was a little later. In reality we could test them again today and get different results.