It varies in my opinion with the hunter, however, I am a huge fan of rattling and the grunt call. I have also found success this year with a doe bleat, something that I have never tried in the past. It is a trial and error thing also i believe. One call will not bring in an animal everytime as you well know. Just have to mix it up and I am 100% sure that if you stick with it, you will lure an animal into your shooting range.