There are quite a few on the list that I'd want the best lineage possible, if I were going to get one. When breeders stick to breeding with the intent of upgrading the line, they end up with some awesome dogs. On the other hand, when a breed becomes popular, many will sacrifice their standards for profit. That's when a breed goes downhill fast. The qualities that made them popular, become diluted.
The only Rottweilers I've ever liked came from a lady here in Tampa. Before she even bred them, she'd announce her intent to breed. She'd get a $5,000.00 deposit, and another $5,000.00 before the dog was picked up, or shipped. Her puppies were sold before she even bred her dogs. She didn't breed all that often, so it was hard to get pups from her line. The reason I know I liked her dogs was that she was the head manager for a locally owned chain of restaurants. It started with one, and grew. I'm not sure if the dogs came first, or the restaurant manager's position, but she imported a Rottweiler. Then another. I know she showed her dogs locally, and went on to show them internationally.
One year, her personal Christmas present to her chefs, was one of her puppies, if they wanted one. My brother got one. He named it Kato, after the Green Hornet's sidekick. Rottweilers were pretty popular by then, and I knew quite a few people with them, and they were purebreds. I was not impressed at all. Kato totally changed my opinion. Later, one of the chef's could not keep his dog, and my brother got it. It too was a fantastic dog. Again, they can be an excellent dog, or run of the mill, but there is a HUGE difference between the top notch ones, and the commonplace ones.
Another example is poodles. One of my aunts bred, and showed poodles. She made good money doing it. She built up quite a reputation through the years. When they became popular, she would not compromise her standards. Ever seen a white poodle with the pink around the eyes from "tears". That's inferior breeding. They should never have "teary" eyes, and that pinkish color from it.
The difference between a well bred Doberman, and the run of the mill ones can be as different as night, and day. BTW, I love a good Doberman. I'm partial to them.
That being said, when I accept the responsibility for an animal, I commit to supply it's needs, not just food, water, and vet care, but social skills, and mental health too. A lot of people don't consider socialization, and mental health. A bored dog is going to develop bad habits to break it's boredom. BTW, I hate crate training for anything other than the occasional trip to the vet, or for an injury that requires a level of inactivity to heal. That's just me. When my daughters would play with their Barbie dolls, the chow I had at the time, would go grab one of the girl's dolls, and then the girls would chase her to get it back. She didn't like being ignored. I went and bought the dog a couple Barbie dolls of her own. When the girls would play, she would get her dolls from the box, sit near the girls, and toss her doll around, and chew on it some. She stopped taking the girls' dolls. When I bought new dolls for the girls, I bought new dolls for the dog.
When I began with chickens, they were thrust on me. I enjoyed them. I try to provide for my chickens that way too. Not just food, water, and free choice OS, but I toss fresh grass in for them to play in, or fresh piles of hay for them to scratch through. It breaks up their boredom. I move things around in their coop. I don't keep their water buckets, and feeders in the same place all the time. I toss a few treats, not everyday, but with enough frequency to break up boredom. I go socialize with them. I sing to them. They don't care that I can't carry a tune in a bucket.