FOR LAYING PURPOSE?? Most definate my vote goes with the Golden Comet (a.k.a. red star, buff comet, etc.)
The girls I had were over a year and out of seven hens I had AT LEAST 6 eggs per day.
Even in winter I got a minnimum of 5 eggs per day.
I have R.I.Reds, Buff Orphs., Barred rocks, Black...