Welllll, I will have to echo the others: Barred Rock. Next would be Australorp. Then Buff Orpington, in very close order. I have all three in my flock of many breeds. I love EEs, because they could lay green eggs (my one who is laying does) and they could look like ANYTHING, all different colors and stuff, but that does make their personalities different, too, reflecting the mix of the breeds that created 'em. But good, reliable layers and great personalities describe the BRs. My BA is a friendly busy-body. I love her. My BO is gorgeous and personable and she just hatched my first GrandChick, so of course I love HER too. *sigh* It's such a difficult choice. Get all three. And get a 4th, an EE.
You might also consider checking out this chicken chart: http://www.ithaca.edu/staff/jhenderson/chooks/chooks.html I refer to it often.
You might also consider checking out this chicken chart: http://www.ithaca.edu/staff/jhenderson/chooks/chooks.html I refer to it often.