I might sound like a idiot here LOL
BUt I have now had a few Fox pro models, from there top line one to entry models and honestly I am NOT impressed with any of them, not that they suck or anything
but I have been playing with e callers since they had them with cassette players(still one that works, Johnny Stewart))
and the sounds on that old cassette were WAY more productive and of different sounds than I have yet to find on anything made new today

yes the older one were limited by the cord from player to speaker and you couldn;t jump to different sounds as fast, but they just to me had better sounds, NOT sound quality, just animal sounds!

the new callers can have hundreds or more of sounds, but you don't need that many and trying to find them is never easy when you have so many

any how, the fox pro's from MY experience with the, the entry models don't have very loud speakers, if you hunt on any sort of a windy day, there NOT very productive, or in WIDE open area's
NO you don't need a million decibels and mega speakers to kill and call things in, but, be nice having louder volume at times without having to add say an extra speaker!
again my old caller from the early 90's was WAY louder if needed)
next my grip is the remotes, in todays modern age, they should be better than they are even on the top shelf models, all the more so at the price tag they carry!
IMO< they need to maybe come with a meter scale on them, so you can see how well the two are talking to each other(caller/remote)

MY next gripe with Fox pro callers and I know they did improve is there, remote decoys, I had there earlier version(2010 era) and it still works fine, but holy smokes is it LOUD all you hear is the electric motor running as it moves, I can hear it from 100 yards away, I have to think critters can from WAY farther, and I doubt they associate that noise with being wild animal??
I TRIED to make mine quieter, but adding rubber foam pipe insulation around it, and its STILL LOUD can hear it still from 100+ yards away, but better than as it was .
THE new one I had from 2016, was NOT all that much better, and the decoy ON it, IMO wasn't the greatest thing either
I WISH they would maybe make a more realistic decoy, like a rabbit, over some silly thing that doesn't really look like anything in the wild?

BEST advice I can tell you is this
GO to a store that carry's there model line, and GO play with them
when you GET home, take it out as if you were hunting and try it, if your NOT happy, TAKE It back
I think you can call in as many coyotes with just hand and mouth calls than with a caller and save yourself a LOT of $$$
less hassle getting set ups, set up and taken down too!
I like the wireless decoy more than the E callers
for close to a grand for a top shelf caller, your NOT getting anything worth that much $$ IMO!