The breeder linked above gives off a strong stench of being a glorified puppy farmer based on their website.
I'm basing this on facts including but not limited to the spaying/neutering of pups before they go to their new homes, visits being only by request (and for 45 minutes), the first come first served attitude and the genetic health 'guarantee' excluding hips, elbows and bite.
Lots of chat about health testing but no evidence on their website or actual numbers, that I can see.
They also claim that their dogs only need trimmed by a groomer a couple of times per year. Try a 6 weekly shave or extensive daily brushing to keep a couple of inches of coat, and you would be closer to the mark.
In comparison to other breeders of cross breeds of this type, yes they appear to be the cream of the crop. It doesn't make what they're doing okay though.
If you want to support a reputable breeder, research actual breeds that may suit you. Go to a conformation show to meet some dogs of the breeds you're considering.
If you're not fussy about genetic health, appearance, coat type, size or temperament, you could get a cross breed from such a breeder, or you could visit a rescue centre and give a home to a mutt in need of one.