Having had a Bullmastiff before, you know some of the potentially 'bad' characteristics/behaviors of them. If you do get one that turns out to be dog aggressive or has a high prey drive and then you come to the conclusion that having the dog isn't fair to him/her (not because of the behavior), you will have a harder time finding a good home for it.

You are right though the Bully is a great dog. Of course, I have one that is about to turn six. Best dog I've ever had, except for the drooling, of course. My Bully has a great disposition, very untypical of the breed, but I'm also very carefull with other dogs (more so, because I don't know about the other dogs). He loves people, though. I started him in training when he was 9 weeks old. He was diagnosed with Stenosis & 2 cysts all at C1 &C2, when he was almost 2. I don't want to injure him any more, so I've backed off the training.

Another breed that doesn't require a lot of room or excercise is the Great Dane.

Good Luck with whatever you decide.

Kerry