I have bought from big and small and a whole bunch in between. I bought a GTP from a well known breeder and the snake died a couple days after I received it. This happened about 10 years ago. Still waiting to hear back from him.
I have also sold a good amount snakes I have produced but I would bet most people never heard of me. I don't have a business name and I haven't bred in a long time.
My snakes are just as good as any of the big guys and most people tell me they like dealing with me better. Not saying the big guys aren't good to deal with but they do have a lot more people to deal with. Kind of like waiting in line at a busy Apple store. They might know their stuff and have great stuff but you can end up just another customer.
Find the snake you can't live without and make contact with the seller. Feel them out. Ask questions. Check BOI. Ask more questions then go with your gut.