Jerryl,
Brant S. is exactly right in that the Circe predator call is very good; however, it does tend to freeze up from excess breath moisture, when using it in cold country. In all fairness, however, every closed reed call I have ever seen freezes up in this country in weather like we are having now. The open reed calls (e.g. Tally Ho, Critter call, etc.) are very good at not freezing up even in -20 deg temps. and do a very good job of calling predators.
If you're interested and want to PM me your mailing address, I will send you a current copy of The Trapper and Predator Caller magazine
www.trapperpredatorcaller.com that contains lots of good articles and a ton of advertisements of all the major trap and predator calling supply outfits; it's kinda the Buffalo Arms of the fur world. Lots of stuff to learn in this predator hunting business, but it's fun stuff, too. You can also log onto
www.predatormasters.com for a lot of good discussion on calling predators.
Gotta warn you though; this predator business is really addictive. About as bad as Sharps rifles. The first time you're laying there calling and look over your shoulder behind you, and there stands 3 coyotes looking at you about 25 yards away you'll probably be severely bitten by "wolfin fever"; worst part is you may never recover from it. Coyotes (and red fox, too) are very good at playing hardball BTW.
Regards