Hmmmm, there is lots of good advice on this subject. I have gone for Barred Plymouth Rocks for my dual purpose birds. I also have a Jersey Giant Cockerell because I wanted to generate some good size table birds.
I haven't eaten a bad home reared bird yet and some have been of pretty dubious parentage. There are lots of breeds you can try, just take a shot at your best idea or a breed you fancy, see what happens.
Enjoy the journey, if it goes wrong then you learn and try something different next time.
Go for what you fancy. Have fun and good luck.