Ive hunted around a few, maybe 10-15. I've personally only seen one that i would use. Now, i liked some of the others ok, but it seems like most have a problem either getting to the hog or getting the deal sealed the first time they hit the hog. A lot of this is due to the size of the dogs. I just don't have have a need for a dog that gets anywhere near 100 lbs. thats just my .02...
Yeah its definitely true that there are a lot of crappy ones in this area. I too have seen more bad ones than good ones. with ratio skewing heavily towards the crappy side. but like everyone has said you can say that about several dog breeds that others seem to use with great success such as catahoulas. What can I say just like with curs you got to do your homework before you spend your money on a dog and you will increase your odds of getting a good one but like with any dog breed its all a crap shoot in the long run.