Dark Cornish is my meat bird. But I just started with them in July so my experimenting isn't quite done. I butchered some at 20 weeks and they were on the small side, but then I only butchered the smallest since I set the biggest roos and hens aside for my parent stock. At a little over 24 weeks they are a very nice size.
I have also raised some white rocks and they go grow fast, so it wouldn't be a bad idea to play with crosses.
I'm going to raise a few CX just to say I did it. If I'm going to badmouth a bird I should at least be able to say I raised some, give them a shot. I'm with you on those, though. Have researched them extensively and don't like what I have read. I'm also going to raise some Freedom Rangers for the table for the same reason. Only I don't consider them anywhere near as bad as the Cornish X. Just unsustainable because you have to ship them in each season.
But the part I am really excited about is the Buckeye project. I'm convinced they have some Cornish in them, given their breast size. I'm going to raise some of them along with some Delawares just to see what they are like for the table.
My DCs are the best tasting chickens I have ever tasted. And extremely tender. You have chosen a good bird.