I did the same search you are doing when I first got my cat. It's not easy to find high quality pet food anywhere in fact.

It's great you care so much about your pets and are doing research, I love seeing that. When I do feed canned food I use this the Select Gold brand from Maxi Zoo.

But 95% of the time I prepare my own raw cat food, which really isn't that difficult and you can buy all the meat at Migros/Coop. I share all about my process on recipe on my blog.

If you have any questions I'm here to help.