I just bought a refurbished Hellfire from "allpredatorcalls.com" This is the second FoxPro that I've purchased from that website. If you buy from them, you get your choice of over a hundred sounds that you choose yourself, then they add somewhere around another 75 free sounds. The refurbished model saves you a $100.
I'm very happy with it. I upgraded from a Spitfire, so this Hellfire seems is SO much better to me. Great volume, very clear sound even at high levels.
I bought Energizer Lithium rechargeable batteries for it, they last very long. In fact, I haven't had to recharge them yet.
BTW- This is the second FoxPro that I've purchased from that website. If you buy from them, you get your choice of over a hundred sounds that you choose yourself, then they add somewhere around another 75 free sounds.