There are too many factors to say that one is better than the other.
How hard do you like to chew? Does your family like dark meat or white meat? Do you prefer fried chicken or chicken and dumplings. What sort of housing and forage do you have? How much are you willing to pay to put chicken on the table?
I've not had problems with Cornish Cross and mine have all ranged just fine. Mine have all tasted really marvelous; nothing like store bought chicken. My family likes the white meat and we like our chicken fried or barbecued. So Cornish Cross works best for me.
I've also raised and butchered a batch of Leghorn roosters. They taste great. But you don't get much meat for your time and cost of raising them. I paid 5 cents apiece for mine. I had lots of excellent forage and bugs for them to cut back on feed costs. I'm glad I did it, but I wouldn't do it again. If for no other reason than I don't enjoy butchering. If I am going to gut and pluck, I'd rather get 5-6 pounds of good meat for my work than to get 1 1/2 pounds of meat for the same work.
However, just because I prefer Cornish Cross doesn't mean that other types of birds aren't delicious to eat. Lots if people are raising and eating other breeds and are quite happy with them.