Crow and or owl for locator calls, add a pot call, slate or glass or both to your arsenal....practice with mouth calls until proficient or add a push/pull button box call with barrel adapter for close up calling when needed if your not proficient with the mouth call.....

Manufacturers? There are so many, River Valley, Cody, Quaker Boy, Knight and Hale, Woods Wise, Primos, etc...etc... etc......test a bunch out.