I bought a Bushnell Velocity 10-1911 at Fry's today. Was testing my V1 with quick bursts and it detects them every time, no matter how short even from a pretty far distance, even if i shoot in the complete opposet direction. I tried my buddies Beltronics V940 and it takes about 4-5 seconds to detect me holding down the trigger. I tried making 1/2 second bursts and it seemed to never detect it all. Even from 10 feet away. I tried about 1 second bursts and after about a dozen of them it start alerting. I also noticed the off-axis detection is virtually non-existent on the V940 and that the detector will start slowly ramping down (for about 10-15 seconds) once I stop shooting. Seems like it's faking sensitivity and ramping. The V1 goes silent within 1 to 2 seconds of me letting off the trigger.