I have been researching the exact same thing. The Minaska seems to have the longest "published" range. However I have no experience with the Minaska to prove it. I was going to order the Minaska then I heard about the new Fury from
FoxPro. The Fury is suppose to be out in October. I have spoken to a few people who have one on order. They are going to let me know what the range on the caller is as soon as they get theirs.
I need a long distance caller because I am a handicapped hunter who has to hunt off his Kawasaki Mule. It is extremely difficult for me to get "hidden", so I feel the more distance I can get between me and the coyote, the better. I am not an experienced coyote hunter, so I may be wrong. But I am sure as heck going to try it.
I have shot a lot of ground hog's, foxes, and a few bob cats. But now it is time to start shooting the coyote's. I have killed 4 so far this year while GH hunting. I will be doing a good bit of coyote calling while I am GH hunting next year. Tom.