I had a male who's sire was von hena c , so am familiar with her dogs, as I said tho, I don't think they are high sport material, but I have met quite a few of the dogs out of her kennel, and have liked them, middle of the road, not over the top, good obedience dogs.
Ryanhaus, I know pretty well from forums/FB, and going thru her website, I like what she's producing/what she 'does' with her dogs. Very versatile. Wolfiesmom a member here has one of her dogs, he's quite a character
She's on my radar for maybe a future dog. (Lets put it this way, I wouldn't turn one of her dogs down
Liberatore, I know of via a friend who trains with her, (and thru the forums)if you look at her website, she also does her own training/trialing of dogs, has alot of accomplishments, pulls no punches, she places her puppies in alot of working homes. She is highly respected in the working dog community and well, knows her stuff
I forgot about Watcher Engel in CT, I don't know them personally, but have heard good things about them.
I would suggest, since you aren't looking for a puppy tomorrow
,,go visit any of the breeders listed above, meet them, meet their dogs.