I don't have the gambit just yet, so i wouldn't know. I hardly snipe as well.
My impression from my most fuzzy memory (clearly i might be wrong) is that the Pavlov and the second gun are too slow in scanning the field to my taste. the third lacks the second gun power. The Wa is actually quite fast in scanning, and so far they drop nicely.
Mind you i rate a gun slightly higher when i like the sound of the gun.
The WA2000 silenced has this peculiar sound. Like shuttle or something.(Actually i can't fathom what the hell it sounds like). In any case it doesn't sound like a bullet being fired at all. The fact that it seems so off from reality makes me kinda like it.