I need to stand up for the CX's here. They are getting a bad rap.
I love CX's. I raise mine for 13 weeks, I have1 that is over a year now and fertile eggs I am hatching. I have 2 that are 3/4 CX and 1/4 Dixie rainbow.
If you do not over feed the CX's and free range them or at least keep them in a large pen they are fantastic birds, they are not smelly and are the best tasting birds around. The only reason I process at 13 weeks is because that is large enough. The roosters will got 10-13 pounds dressed the hens 7.5-11 dressed. They are great cut u for fryers, roasted or smoked at that size.
For my wife and I we get 4 meals out of the breasts, and 2 out of the hind quarters. They go over better at holidays than turkey does. When a CX is sloppy, smelly and goes bad it is because of the parenting skills it grew up with, just like with kids.