My Delawares are the friendlist of my chickens. One was a rooster and we had to get rid of him, but the hen has the best disposition out of all my flock.
My White leghorns lay almost everyday. They are nice, and really act like a dog. As soon as I open the front door, they hear it, and come running! Sweet girls, and good layers.
I have several white leghorns including a roo. They are fabulous birds and great layers.
Some others to check out would be RIR's, and Black Australorps as well as Easter Eggers.
I agree with the other posts. Delawares I think are more docile. I had Leghorns many years ago. They were more flighty. It is really hard to say what you should get. I say get what you really want.