Beautiful cats everyone.
As a vet I get asked which food should I feed my pet at least 15+ times a day. Basically whatever food you can consistently get. I personally feed Purina One to my cats. The ONLY reason is because if i run out of food and i have to get it after work and I'm stuck doing an emergency surgery i might not get out of the hospital until 2-3am. I know i can go to most 24 hour grocery stores and pick it up.
Ive given several lectures on different foods and different companies. Prescription and over the counter diets.
As for raw diets they are in style right now. I don't for the life of me understand why. A lot of veterinarians will NOT treat certain pets for certain diseases if they are eating a raw diet. For example, if your pets eating a raw diet and is diagnosed with an immune mediated disease you treat them with steroids, you can cause an abnormal shift in gastrointestinal bacteria. As mentioned before E. coli, Salmonella... I have a lot of clients that do feed raw and it works great and others which have had a problem. My biggest concern is when your pet eats raw food and then you pet or play with him/her and then touch your face or eat something your exposing yourself to those bacteria.
As Ducati said (by the way Xenias and kenyas i picked up from you like a year ago are doing great) canned food is ideal for optimal health. Every cat is dehydrated all the time. Usually its not clinically significant. They aren't like a dog who will constantly drink. A lot of cats will hardly drink at all. One of my cats I've only seen drink twice in 3 years. Unfortunately most (75%+) of my senior cats are being treated for some degree of kidney disease. Kidney disease is a disease which is not treatable. I can never correct it but only prolong the disease.
I do sell certain prescription diets. I personally hate selling foods because it goes against my first rule. Something you can consistently get. I don't want people going out of their way to come to the vet to get food. I would rather you go to Petco, Petsmart, Pet Warehouse, Pet... They are everywhere and have better hours then most animal hospitals.
I really like Halo which rookie07 mentioned for my early kidney patients because it does have a very low protein content for the over the counter diets.
There is going to be a lot of changes in the next year as AAFCO and FDA starts to changes it regulations on dog and cat foods.