Another fan of a mixed flock. I had all buff orpingtons at one point and I was happy with them, but I can't see going back to just one kind. There are too many options for that. I have buff and lavender orpingtons, EE, barred rock, RIR, black sex link, GLW, leghorn, and egyptian fayoumi. I'm considering closing my flock at this point, getting an incubator and just hatching from what I have.