I think the 'good breeder' thing is really tricky.
Someone I know bought a dachshund pup and would swear they were a reputable breeder, well thought of, knew someone else who had a pup off them etc. Could well be right that they're a good breeder.
But by chance we happened to look around their property when we were house-hunting, and I went into the basement with the agent to view what was down there, and it was a stone-walled cellar room with no windows and a couple of small crates, where the dogs were shut in. I really, really didn't like it. It was like a prison.
You could argue that the dogs were crated for their own good whilst the owners were out. But they also had outdoor pens, and empty crates in the kitchen. So other places the dogs could be, more comfortably.
It basically smacked to me of poor bitches living their lives in the downstairs crates and only being brought up when whelping or for show to prospective clients...
I don't know.
Equally, an overheard conversation today amongst a couple of owners of pups and a breeder. Local area, everyone knows everyone, you know. Breeder couldn't recall what exact relation the pups were to each other, or who the mother was for each - was it this bitch or that one? Well liked, breeder, lovely pups, all litters in her home - no complaints. But just goes to show it's a minefield - she couldn't recall off the top of her head, and these pups were both less than 18 months, so that means multiple litters from multiple bitches.
We have a rescue. And that's not without controversy depending on how you rescue them/they come to you. I'm not sure there is an ideal for dog ownership and welfare any more. Kennel Club can be as bad a genuine bad news puppy farm.
You just have to do the best you can, and be a committed owner however your dog came to you.