Today i was bored so i got my v1(3.826),x50(Rev 5) and New Bel Rx-65(M4 antenna Rev. 6.1) and tested them with my osprey range finder. All units were testes one at a time and mounted in the same location. None were favored in anyway.
Heres the results:
At hood=20 ft away
Plate shot=20 ft away
Inside car (holding range finder directly underneath unit)
Inside car (holding range finder 12 in. directly behind rear laser antenna)
Outside behind car
The new rx-65 m4 antenna has increased its laser sensitivity. The v1 is still AMAZING. Maybe the newer x50's that have the new m4 antennas and also have improved laser sensitivity.