I have used the original can last season and didnt have too much success with it. I feel like its just not loud enough to be heard, especially if there is any type of wind. I bought the big can about a month ago and have had all kinds of success. I lost count of the spikes and small 4's that i have called in, does as well. I even shot a nice 7 pointer last week that i turned around after it didnt listen to my grunts at all. Hit the big can 2 times and here he comes.