chaos........Im fairly new to the breed too. My black one is a mutt and he is about 2. HE has been really good. Easy to train. THe white one I just got from a friend of a friend. THe owner took decent care of him, but didn't give him a whole lot of attention. So he is taking a little work, but a real loving dog.
rhino.---presa's are amazing. That may be my next dog.
My buddies pit just died. Our whole crew didn't think of Dillinger as a dog. He was another one of the guys. Everyone in the neighborhood knew him. Hell he'd let himself out for walks and then be scratching at the door 15 minutes later to come back in. He was truly the opposite of the steriotype that pits have.