Hard to beat a lab.
On another note of controversy. When my daughter was wanting a dog and she had a newborn, I gave her this advice. There are lots of dogs out there that look cool and can be trained as a safe dog around kids. However, look at the breed and what it was bred for. Regardless of how well you think you can train a dog to be trusted, do you want a dog that has been bred for any type of aggression around your child?
Is your child worth the risk?