Sooo...if I was planning on buying a puppy to start getting into showing (starting in "fun" shows of course) I should be more concerned with one that is UKC registered as opposed to AKC?? I know this sounds like a totally ignorant question but how in the heck do i tell the difference between the Ambully, American Staffordshire Terrier, the staffordshire bull terrier & APBT?!? They all look the same...and this particular breeder that I was looking at just calls them "pit bulls" so i assume that they are APBT?!?