Seriously? Selecting a carrier based on quality of food is a new one for me. I doubt the Y food in any carrier is worth more than a few dollars, and even in C may not be much more maybe a few tens of dollars maximum. Whether in Y or C, the cost of food pales in comparison to the cost of the ticket and if the quality of food is that critical then would the solution not be to spend a few dollars and eat at the airport or bring your own food?