Big breeders are good because you know you're not going to get scammed, their reputation isn't worth screwing someone over $700. That being said, they can have a tendency to be short. Not rude, as that should never be excusable, but short/to the point. They have a lot of inquiries to shuffle through.
If all the animals are of equal quality, I would probably go with the most helpful person. The one who is taking the time to answer all of your questions and sending you more pictures.
The guy being short and threatening wholsaleing I would not do business with personally. That is just poor customer service and does not deserve to be reinforced by your dollar. The only reason I would go with a big breeder vs a small breeder is the quality of the animal. Whichever one had the snake that stood out would get my business.
This is just my train of thought: Quality > customer service > reputation > price. Though, as I said, if someone is flat out rude, they're not getting my business no matter how much I drool over their snake. (Its a pet peeve of mine)