I recently received a howler that was made by a Pennsylvanian that knows coyotes. His call is called the The Dog Talker". It does just that it can do all kind of canine talk.
I also like the Magnum Crit-R-Call open reed as a howler.
I have so many type howlers but the above to mentioned seem to have the best sound. I have the Primos Hot Dog, Red Desert Howler, Sceercy Howler, Johnny Stewart, The Kirk,
Soon the person that makes "The Dog Talker" will be releasing an video DVD a how to call in Eastern coyotes. You Pennsylvanina hunters or Eastern seaboard coyote hunters might want to get your hands on this video.
Here is the website of the person who sales the The Dog Talker and the one who will be coming out with the how to video.
http://www.critterbustercalls.com/cbgcnew/