Well...I think we have a consensus! I had been considering a lab and I know a lot of people with them that love them. It is my wife's first choice. My only concern was as mentioned above regarding their lack of aggression when it hits the fan. I want something that will protect our property when we are at work or be willing to jump in between the kids and one of the aggressive neighborhood dogs. I like the idea of a lab mixed with something like a rottweiler or other, slightly more aggressive dog. Thanks again for the replies.