Welcome to the forum!
This is a really confusing subject...and can be really complicated, what with all the ingredients and anallysis. You will be sure to see a LOT of different opinions on here, but I think there are some basic points most folks can agree on.... BTW, Don't pay attention to the marketing...only what's on the ingredients list / analysis...Many foods are marketed and highly priced when their ingredients are similar to much cheaper foods (just FYI).
Some points to look for:
- As much meat as possible...listed at the front of the ingredients list (i.e. a food with: chicken, chicken meal, turkey meal is better than : chicken meal, rice, turkey meal.
- As few grains / carbs as possible.. although they are all different, cats aren't really designed to digest any carbs..no matter if it's rice, corn, oats, etc. (IMO, they eat MEAT in the wild...they might get a little plant matter from stomach contents of prey, buth that's minimal...many cats gain weight on carb heavy diets b/c they eat a lot of the food trying to get enough protien / fat and the carbs just hang around as fat on the cat.. MY oldest cat, Toby, is this way..he'll balloon up on a carb / corn heavy diet).
- Veggies and fruits are not really necessary (cats aren't omnivores like us..these are usually emphasized on labels to make US think it's a good food).
- Look at the guarenteed analysis..with some exceptions, the lower the carbs and higher the protien level the better. They won't list carb content on the label, so add up the protien, fat, moisture, and ash content, subtract from 100 and that will give you the carb content.
Although the info above is usually true, grain free dry food isn't always the way to go... some cats have issues with digesting such a rich food and if your cat is old / has liver or kidney issues, they may not be for you.
Also, some ingredients can increase the chances of your cat developing a UTI...I avoid any food with fish in it for this reason (one of my cats developed a UTI while they were being fed EVO..a grain free food with fish) and look for low magnesium levels.
Also, FYI..Many people mix 2 or more brands or rotate..this is an option if you can't decide on a favorite or want to integrate some grain free food with regular food.
One more thing... Most people on here will suggest feeding the most wet food possible..since it helps prevent your cat from being chronically dehydrated..I feed about 50/50 dry and wet. With wet foods, look for recipes with NO grains and as much meat as possible.
Now, some brands I've used and /or would suggest you look into:
with grains: chicken soup for the cat lover's soul (good for the price, hard for me to find), authority (petsmart..most bang-for-your-buck of the foods they sell IMO), nutro (same price point as authority most of the time), california natural and innova (natura pet foods brands), wellness (pricey for what it is), natural balance, halo, Artemis, and nature's logic
without grain: taste of the wild (this is the cheapest bang-for-your-buck grainfree but it does have fish, I'd feed this if I could feed my boys fish), EVO (very calorie dense and expensive, some cats don't tolerate it or core), wellness CORE (VERY expensive), california natural grain free (new, haven't tried, but doesn't have fish), Merrick before grain (haven't tried this either), Origen and Acana (I think these are made in Canada, may be cheaper for you)... BTW beware grain frees with potato high on their list...it is still a carb!
I'd suggest you make use of this site to look at ingredients and basically price the brands above:
www.petfooddirect.com I have ordered from them before, but use it to look up ingredients, etc as well.
I'd also suggest that you contact the parent companies of these brands...many will send you samples and/or coupons to try their products. No matter how good a food is, it won't do you any good if your cat won't eat it. :P...I found this out after shelling out a lot of cash for wellness canned foods and EVO 95% meat canned foods...cats wouldn't touch them.
Good luck!
Artgecko