One seems to have the best overall composition to me. It is almost more of a portrait shot to me though. The guy in the middle seems to overpower the rest of the pic. If that is what you were going after cool. 3 is interesting after a couple seconds of looking at it because you are wondering about the huddle on the right. Just my .785 cents
I'm going to go with #3 as well. I like the balance between the mysterious group on the riht and the mother with her stroller on the left.
Very different feel to each of these, but #3 would also be my favorite of the group. Can't really explain why...
#1 for me. The Bulldog's front left leg and the guy's right arm are almost parallel. That's what I noticed first, along with it's expression. But that's just me!