RE: elk calls
Bugle call of choise (and used very sparingly . . . to locate mostly) is the Power Bugle by E.L.K. Inc. in Montana. They have a large variety of hunting videos as well.
My favorite cow call is the Hyper lip single and double by Primos.
Elk calling is not the answer to successful elk hunting. Most elk huntersin my corner of the elk world will tell you the elk are becoming call shy. They know it ain't one of them AND exactly where you are! Anymore I'll use the bugle IF I hear them first to locate, then it's run-&-gun. Go to them using the cow call to cover my noise and movement to get in close. Not likely to Bring one in like on T.V. Alot of those shows are on private property or even (God forbid) high fence ranches.