Basically by definition there are no (or nearly no) "good" Cavachon breeders. CKCS have a huge number of health concerns and the chances of finding a --poo or --chon etc type breeder who is doing the proper health testing and going back generations with it is like needle in a haystack.
Red flags for Cavachon by Design:
Advertising hypoallergenic for F1 mixes
Repeated mentions of "champion bloodlines" but not of what the breeding dogs have actually competed in or been evaluated via a third party (conformation, agility, obedience etc)
Allowing purchase (er, "adoption" which is a pet peeve of mine for the term being used by breeders) of 2 puppies at one time to the same household
Several litters coming up in the near future which indicates volume breeder
No clear mention of the health tests nor results of those tests for each breeding adult
Red flags for Foxglove Farms:
A dubious understanding of genetics in terms of what diseases can be passed on and how
Breeds 2 different designer mixes
HOLY WOW THAT PRICE! $6,000+ for mixed breed puppies!!
No real mention or promotion of the adult dogs; accomplishments, health testing results, show championships etc.
The 5 year health guarantee actually sounds pretty good but I would be curious to see the actual contract.
Red flags for Cavachons from The Monarchy:
Minor points for actually listing the adult dogs. Negative points for having one breeding male and multiple breeding females with no indication of outside breeding stock. The chances that the single sire is the best match for every dam are just really low/unlikely.
$3000 a puppy with 3 litters in January alone!? Even if they are spending the costs on proper testing, vet care etc, lets say 5 pups per litter, 3 litters, $3000 per pup, that is $45,000 income in connection with January litters alone. A good breeder will have in their contract that they will always, for the life of the dog, take back any dog they bred should the owner not be able to care for it. At that volume, do you really think the breeder can legit promise that?
$1200 for keeping the puppy an extra two weeks for training so they will be more potty trained and such... well, just saying that getting paid $600 a week to care for a 8-10 week puppy is a pretty good salary. I mean, older pups are going to be more housetrained just by biology if you do some basic work.