If you want to own the absolute best sounding, easiest to use howler {it's gotta be because I can do it perfectly!!!} go over to predatormasters.com and look in the "custom calls" section of the forum. There's a guy who's handle is "ultramag"...pm him and ask about the howler he makes with the mouthpiece that has a latex band around it. He attaches it to a buffalo horn and can carve and color anything you want in it...best sounding, most realistic howler ever. Doesn't have that duck call like "buzz" of the open reed calls.