Would others agree that Ixworths are not great as roasting birds?
They can be good if you ensure that you keep them on good ground, don't let them range too far and that you up the corn or maize in the last few weeks....you need that layer of fat for roasting. I would also say that they are better slow roasted. The taste is very nice, totally different from your hybrid bird.
Personally I wouldn't raise Ixworths just for the table. It is a different matter if you were breeding and wanted to have decent cockerels that were good enough to raise for meat.
For a roasting bird, I would go down the Hubbard/ Ross Cobb route. With these you can raise them to a good weight and have meat that tender so much so, that you can divvy up the meat for roast/stir fry/rolled breasts etc.
I just found that I could get more dinners from hybrids, in that the breast meat in particular was wonderful
for stir fry, kormas or stuffed. I raised the birds to a good weight and had the legs and rest of carcass as a
roast. The Ixworth breast meat was never really that juicy and tender (good taste though).