What makes a dog that yips or barks on track worth any amount of $ ?

here n okla wher i hunt not alot of hogs.i hunt mostly hounds but have a hound rite now that is slient and i luv him dont bark till bayed.i have had him trail hogs up to a mile an bay them n there bed. i can bay hogs with open dogs or slient. i just like a hog dog show me a hog at the end i dont care how we got there.but i understand sum of u guys luv for a slient dog.i mite add that i have alot of country to hunt so it dont matter how long or short a race is.but slient or open just show me the hog n ill feed it.we mite ride 10 to 25 miles a day just to bay one hog so we need a dog with a good nose to trail or work thru old sign thats the main reason i hunt hounds plus i use my dogs on bear.