I use them both with good results. Like VP said you have to be careful that the birds don't wize up to the locators. Up here everyone uses an owl call so if that doesn't work I try something else. I even bought a peacock call once but never had a bird answer. I guess the store saw me coming. I try owl calls in the late evening to put the roosting birds to bed. If I didn't get one to answer at night I try the owl again in the dark next morning. If still no answer I try the crow once the sun starts to rise. After that I only call with a hen call to get a gobbler to answer. For me the locators work about half the time. If they dion't I figure that other hunters have probably messed with the birds so I often try another area. I hate crowds in the turkey woods.