I bought a mini-Doxie from the shop in 2007 and a mini-Pom in 2009. Both puppies were healthy and well-adjusted. I especially liked that Seven Seas insisted I visit an affiliated vet to confirm the puppy's physical condition. When the vet diagnosed a slight case of kennel cough, Seven Seas paid the fees even though several months had elapsed since purchase. I highly recommend this merchant.
Pros: Puppies are healthy, socialable
Cons: None that I saw