Of our three the first came from Ms Rodgers on Lookout Mountain from her Tara, Rodgers' Miss Billie Mags. She raised our Kuvasz puppies for 14 years. The next and the current both came from Phoenix Rising rescue. Bess lasted 12 years, Bonnie is with us, we believe about 7 or so. Since she went to her first home as a street dog, true age isn't know. For Bess and Bonnie, we asked PRBCR to keep a lookout for a low pressure girl. Bess was a failed herder who worked out quite well. Bonnie shows street smarts, and excitement when it'[s indicated, the rest of the time she's the close dog. Doesn't want in your lap, just close. Sleeps by the bed, not on it uless invited and even then leavs before she goes to sleep.
We've had excellent luck with rescues. We visited the fosters and met both dogs, and introduced our current Kuvasz each time. The girs assimilated without problems. In the current case, Bonnie's fosters spent the afternoon with us and the dogs. The rescue sent a home inspector when we got Bess, since we knew the previous owner well. With that process, I recommend rescues. Breed rescues will know more about the dog,but shelters are also a good place to look. While I'm not opposed to going and getting a puppy, I wouldn't have one shipped, nor when I was breeding (co breeder) we wouldn't ship puppies. You didn't get one of our puppies without visiting and letting the dogs vet you. My co-breeder said a couple of times, people visited and after a bit of visit, their deposit was returned because they just weren't suitable or in a suitable situation. Short answer- go for the rescue.