Our local Tractor Supply has some ISA Brown chickens in this week and I am surely tempted to add one or two to my little backyard flock. I am interested in a light colored hen that lays larger, brown eggs, and which is a reliable layer in a variety of weather conditions. Is the ISA Brown's laying capacity comparable to a Black Sex Link? How does the breed compare to Orpingtons ( my 2 Orpingtons only give me 2-4 eggs weekly at this point). What is their personality like? Thanks!