My Black Sex-Links and Golden Comets are "Egg Machines". They're 31 weeks old, they started laying at 17 weeks. They punch in at around 7am and punch out no later than 9am. They go in, do their business, and get out. The rest of the day is left for exploring.
I agree, the hybrids are very productive, I try to add 5-10 every other year.. I have 6 in my group of 22 pullets i added in spring, which are all at POL. Usually the hatch in spring/early summer means they'll start in late fall.. And they produce during winter months while the older hens are shutting down. Just a little trick ive learned