We've never raised meat birds (Cornish X) because they are bred to be grossly breast-heavy, aggressive feeders that require exclusive quarters. They grow quickly and are butchered in 12-16 weeks. They don't get along well with dual purpose birds and can't be raised together.
When researching breeds, don't forget to consider winter hardiness and temperament. Some birds are happier in confinement than others. Certain breeds are more gentle or aggressive than others. Eventually, you make a decision and get started.
I've ordered my chicks and I'm excited to start my new babies. I included another Easter Egger for green eggs. We're trying a new (to us) breed, the popular Black Australorp. And we're going for a Silver Laced Wyandotte so that our farm has a new glamour girl. Finally, we're raising a few extra dual purpose White Plymouth Rocks for meat. This is a new effort for us because purchasing organic chicken is so expensive.
The new chicks will arrive in a week or so. Stay tuned for updates and get your order in soon!