I usually hunt public lands, and I know they get hit by other coyote hunters, no doubt many with an e-call, and I'm sure they kill coyotes.
I figure handcalls give me an edge on public lands, because my Cottontail/Jackrabbit/Howler sounds, and the way I produce them, is very different than a continuous sound loop of the exact same sound on every brand of ecall out there.
When a coyote busts a guy playing Jackrabbit Buffet on his ecaller, I suspect that particular coyote will never come to that sound on that brand caller again.
As others have said, though, both ecallers and handcalls work, and one might be better than the other for different setups or terrain.
I have an ecaller and I really should use it more.
