I believe one thing we can learn from all the above comments is:
It all depends on the state of the deer (his or her attitude at the time), if he or she is going to come in or go further away, when calling. Have had calling work and not work. I've used them and not used them. Sometimes I will just blind call to change my routine when I've been in the stand for a long time. Always experimenting, types of calling, how often, how long, cadence, etc.; always looking for reactions,