I am looking fro a boxer, and i started at my local kennel culb, then went on to breed clubs, my next stop will be at shows, it can take a long time to find the right dog but its worth the wait!
You need to go to their national club website to start and that will give a list of breeders.
For example, google : Boxer Club of America or Cane Corso Club of America. You may want to decide first what breed is right for you and then start your search. You have listed breeds which are very different in size, temperment and activity level!
Have you thought about a rescue? There are alot in New Jersey. Have you studied the cane corso?Go on the ICCF website. And be sure to read the buyer beware.
Not in NJ. But you will be spending a whole lot of money for a puppy. Please feel free to come up to NJ and get a rescue adult, I personally would be most pleased to see more leave the state. 8 million people, and seemingly half of them want to own a dog as large as a Volvo.
LOL! Casa, a Corso is just a good, medium sized doggie - but that's coming from someone who describes the German Shepherd of the house as "the small dog"