I gave the MAD Buck Growl a decent test over this past season and personally, I found that the Primos Buck Roar wasa better designed call. Not onlydidthePrimos calloffer a better, more authentic sounding grunt but it sounded MUCH better when used aggressively to "roar". I had numerous bucks respond to these calls,including some respectable animals. I also noted that the MAD call had a tendency to stick, especially in cold weather. The Primos never stuck or frooze up and thebuilt insnort wheeze just makes the call that much more impressive and authentic. Ifigured when that call was released that thousands of hunters would run right out and buy then take it to the woods and be ticked off when it didn't prove itself to be some magic bean! LOL! Let's face it, you're not going to call in a aggressive mature buck if he's not in the mood or there simply isn't one in the area. For that reason I prefer to use the call in big deer areas and then (as I am with nearly all calling) call only to the deer I can see and thus "read". No such thing as a miracle call but when used at certain times during a very limited time frame, this call could easily put a monster buck in your sights. It's a tool that I feel should be carried with the rest of your tools of the trade. Good luck and good shootin'