Orpington is my favorite dual purpose chicken.
When matured, it is like a golden retriever in chicken form.
It's a big fluffy chicken that lays 3-4 eggs a week. It is very docile and calm which means it's very laid back and easy to work with. Buff (blondish) is the easiest color to get but...
Cockerel - Male chicken under a year
Pullet - female chicken under a year
straight run- random mix of the 2 genders
Using the typical math- your 25 meat chickens will somehow (shipping, sudden death syndrome, the cat, the dog, the kid, the act of god that nobody for sees) become 19 meat...