I use them and have a big heavy set. We have done so much decoying with rattling and from our experiences the sound you can produce definitely has different results. Meaning, we feel we get more larger, mature deer to react to rattling when you have heavier, deeper tones from rattling with a thick heavy set of antlers. It's still 50/50 when we do it but we love to rattle. Another thing that has made a big difference in our results is not just slamming them together and going crazy non stop for 30 sec to a minute or so. But ease your way into the sequence and be very sporadic with the tone and amount of time you rattle.