I am still looking for my "perfect" breed. Harder for me as I hate red chickens LOL started with Brahmas. I love them other then they aren't very cost effective. I will always have some but not my "go to breed" I will also have a few easter eggers . I like that australorps but they are a real pain to pluck clean. Great egg layers tho.
What are the characteristics you need (besides not red, lol) - from this it looks like good layers, dual purpose for meat, cold hardy? Have you tried one of the varieties of sussex?