I don't buy into the "this brand or that brand is the best" theory. If you can use a diaphragm turkey call then it should be a cinch to call elk with it. All you really need is a echo tube to go with it (that can be as simple as a foot long piece of 1 1/2 inch PVC pipe). You can pick up an instructional tape at any sporting goods store that will show you the sounds you need to copy in order to call in bulls. Bugle sounds do work but not always. Bulls aren't always looking for a fight so I only use a bugle as a locator. If I can get an answer, I try to close the distance and switch to soft cow calls & chirps (bulls ARE looking for cows). Keep it simple. Over calling will lose a bull more often than not.