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.
Carlos Garcia- California Coyote Hunting
Rem. 700 ADL .243 SS Boyd’s At-One w/Leupold VX3i 4.5-14x50 shooting Cavity Back Bullets 92g MKZ's
Winchester 1300 12g w/ 3" 1 1/2 oz HW13 BB's
FOXPRO Shockwave, BogPod, SpeedyYote Kickstand Vest