Honestly?! I'd be put off both breeders, but I am especially fussy...
The first because they appear to have used the most 'convenient' dog for their bitch rather than one which suited her most and as they sound inexperienced themselves and you are first time owners, they are unlikely to be able to offer you advice on the puppy after you have bought it. I woudl also want to look closely at the pedigrees as if the Mum and dad belong tot he same family, it is possible they came from the same place and so may be related. Not desirable for a novice breeder.
I would be put of the second due to the number of litters. Have they said why they are breeding so many litters? If it is for same reason like they took the bitches abroad to a stud dog, or have imported a dog 'on loan' for a short period, fine. if it is because 'all the bitches came in season together' (they always do come into season together if you own many) or somethign simlar, that's not really a great reason, IMO. If they have two litters, that's not so bad, but ask if they are keeping a puppy themselves.
Other than that, you need to see the parents KC paperwork (even if they don't own the stud dog they should have a copy of this) and check that it is not endorsed 'progeny not eligble for registration' and health test results if they have been done. I think eye testing is done for Bichons but it seems lots of breeders still don't do this, but ask anyway.
Obviously you need to see puppy with Mum and if you are looking for a family pet it's really a must that Mum and pups are kept indoors and preferably in a highish traffic area of the house. Pups should be clean and not smell bad and Mum should be interested but happy for you to look at and hold puppies. The pups should have plenty of toys and stimulation and be bold, interested and outgoing, a bit boisterous. Ask how old Mum is and Dad and check on their papers. The Kc recomend 1 year miminum fo a bitch, but most breeders feel this is too young, and even for a toy breed wait until 18-24 months old.
Ask what food pups have been weaned on, it should be a 'premium' brand or fresh meat. Ask if puppies have been wormed and what with and how often and if Mum was wormed during her pregnancy and since then also. (this is really improtant, worm damage when young can cause lasting serious damage) Will the pup have seen avet before you take it home? What happens if you take it to your vet after purchase only to find a serious problem? How old will the puppy be when you take it home?
Ask if puppies papers will be endorsed (most good breeders will do this) and if you will have to sign a contract when buying your puppy. (again, most good breeders do this) Ask what you will get in your puppy pack, and if you will get some food to take home with your puppy. Will the breeder be available after you take your puppy home for telephone or other advice if you need it and what will happen in the future if you can no longer keep the puppy, will they take it/buy it back?
Sorry this is so long, and I appreciate I am very fussy, but this dog will be your pet for the next 15 years. Out of the two you have mentioned, without any extra info, I would go for the breeder who shows. You have a much better chance on face value of getting a better dog and better 'after sales' care due to their experience in the breed.