My whites so far are horrible layers. They were hatched April 16, 2008, and we are lucky if we get one egg a week out of three hens. Their egg size so far is only as big as a silkie egg.
My Jerseys don't produce as many as my Wyandottes, but I've never had a problem with them NOT producing well. I have 5 girls, 4 of which are still relatively young, and it's not unusual for me to get at least two dozen per week during peak season. They're supposed to be dual purpose, but they take too long to mature and aren't as meaty as I was lead to believe. I still like them, though. I love the mammoth eggs.