Samantha is allergic to any food with rabbit in....it comes straight up again.
In the past, any cats I've had have LOVED Felix, but it seems to have changed over the years. Now they won't touch it. Friends say the same about their moggies. Mine all love Whiskas, which is now rationed due to the cost of feeding so many cats. They have Asda Tiger food mostly. If I had fewer cats, I'd feed Whiskas purely on the premise that it's got Sam and Polly to a good age.