I also recommend Field of Dreams Kennels or at least that blood line. My old dog was from here, new one from their stud Finn.
I spoke with Erin's Edge, I have no opinion really, but I didn't go with them.
One other breeder that is highly regarded, small breeder, one maaaybe two litters a year, is Preston Labs out of shawano. Great dogs, great lines, tests, 3 health hips/eyes, super people.
http://www.cprestonlabs.com/ They use Field of Dreams for studs. My current dog is from here.
I think any kennel that is doing the genetic testing for EIC and hips and eyes is probably a good kennel. if a dog sucks, it's not because of the dog or breeder, a dog only learns through training and repetition. If you train and spend time with a dog, mutt or pure bred, it will be a good, well mannered dog. If you are inconsistent and don't spend time with it, it will not be what you are hoping for.
My dog is an intact male, he doesn't hump things or roam because i trained him to know that's NOT ok behavior. He doesn't mark every tree because i trained that out of him.
There are A LOT of myths when it comes to dog breeds, dog training and dog behavior.