I raise Easter Eggers, and (since they are a slower growing breed) I'm experimenting with several crosses to try to improve their growth rate. I did an EE X BLRW cross last year and got a very nice looking cockerel, he grow out very fast, but unfortunately a fox picked him for dinner before I...
Have you considered Buckeyes? They are a some what rare breed, and were developed as meat birds.
I raise Black sexlink roosters as broilers for our family. By management I have been able to raise them with very little feed, and in a fairly short period of time. My family prefers the BSL's over...