I just bought the FoxPro Inferno. I watched a YouTube video by FoxPro stating that they used the remote 550 yards away in direct sight and 110 yards down in brush. We'll see if that's true or not... It has a new remote and comes with FoxBang which will automatically play a pup in distress after a shot. It comes with 75 sounds which is probably more than I will ever need for $199.95.
I played with it here at the house and the remote seems really easy to operate and has decent sound quality.