I really don't like any big chains. A lot of their animals come from irresponsible breeders and their care of the animals is deplorable. The bird care is pretty bad at most of these stores, but if that's not enough, just take a look at all their dying fish, rodents who never get a break from breeding, and starving reptiles with stuck sheds. I don't morally think it's right to buy animals from pet stores and continue to put money into huge businesses that "can't afford" decent care because they'd supposedly lose money. Even if the pet store in your area is good, you're still supporting the whole chain and all of their stores, including the awful ones.
If you're looking for budgies, I'd highly recommend you rescue one, which typically aren't hard to find. There's so many budgies that are thrown out of their homes all the time, and a lot of craigslists/kijiji/classified ads are out there to prove it. Budgies are unfortunately seen as "throw-away" animals that are cheap to buy and easy enough to "maintain" without worrying about screaming, biting, and plucking like bigger birds might do.
Budgies are just as fragile emotionally and physically as bigger birds, they're just not taken nearly as seriously as big birds that can do lots of damage or make their discomfort easily known (through screaming mainly). And many people buy from pet stores impulsively because they see all these beautiful mutations are are told by employees they are easy "starter" birds. So there's plenty out there for whenever a person's kid gets tired of caring for it, from whoever gets annoyed by the constant chittering, who don't have the space, or any number of other reasons.
Budgies are bought and sold like furniture or any other non-living decoration/toy, they're just so easy for anyone to obtain. And people don't care about them enough to even try to keep them around like you might with a dog/cat or even a bigger bird.
I can completely understand trying to rescue a bird in trouble from a pet store (I became obsessed with a little black cap conure a while back myself), but I don't think it's a good idea to buy a bird from them just to get a bird. There's so many birds in need, and there's already too many suffering in chain stores like these, that's why I don't think anyone should really buy from these stores just to get a bird. Even if someone claims they don't have many birds around them, I don't think any person's want to have a bird should come before the wellbeing of the birds in the shops they're actively supporting by buying one there.
*edit: I realized this post goes a bit all over the place. To sum up, I don't think it's a good idea to buy a bird from a pet store because that animal will just be replaced by another animal suffering again. If we want to stop the cycle of cruelty and of seeing animals in such generally awful states, we need to stop supporting these corporations at all. So I personally don't think it's worth it to buy an animal from a pet store unless it is a truly urgent situation where the animal is in immediate danger. They all deserve homes and I'm certainly not saying they don't, but in the long run, buying an animal from a pet store will just allow them to continue to get more and more animals, multiplying that cruelty onto so many more souls.