Bull Terriers

I hate the bad reputation that this breed has, but I have heard many controversial stories about them. I am thinking about getting a bull terrier puppy in a few months and just have a few general questions about their temperament. I own a few cats and small animals, should I be worried about having a bull terrier around them because I know they have a high prey drive and could potentially kill a smaller animal? Another question I have is, I have a 20 lb. male mutt, I am probably going to get a female dog to reduce the chances of fighting, but do bull terriers get along well with other dogs or is that another problem I could potentially face with the breed? I guess I want to hear from people that have experience owning these dogs with small animals and other dogs.