Foxpro is head and shoulders above Primos in the Ecaller game.

Get the best caller with the TX1000 remote you can afford. Even the mid priced Banshee and Hammerjack have better sound quality than the AD's and the TX915 remotes are a step up from the "old" models.

My one suggestion would be to go with a minimum of an 8 battery caller. Volume and drain time are greatly enhanced!

AD's will call in coyotes but there are many reports of faulty equipment coming from the Primos ecaller camp.
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Carlos Garcia
California Coyote Hunting
Rem. 700 ADL .243 SS Boyd’s At-One Leupold VX3i 4.5-14x50
92g MKZ's by Cavity Back Bullets
FOXPRO Shockwave, BogPod, SlyDog GnP chair