There is a better deal with Bass-pro shops, they work ok I have a johnny stewart one with various cartridges, the crow ones work well too, I also use a couple of the cass-creek ones which are good. You got to remember the old coyotes ears are about 20 times better than ours, so loud isnt real necessary to get his attention. I can recommend the two above as working well, why not have a Cass Creek one and try it out, your only spending a few bucks then.