I feed my kitties a wide variety of foods. Are you talking wet food, dry food, or both? Twitch & Lily get 50/50 wet/dry right now, but I am increasing the wet. As Twitch is an adult, & Lily a kitten, I have been feeding mostly Felidae as it is all ages. They really like it. I also have Nutro Indoor Kitten formula. I love it & they both love it. I bought Innova adult food & both kitties love it. I just got a bag of Innova EVO today. I left it on the counter & when I returned 15 minutes later Lily had ripped into the baga & was munching away contentedly. I think that means she likes it.
The EVO, however, was quite pricey. I believe I paid $5 for a 2.2 lb. bag. The 7 lb. bag was $35. It is an awesome food, though, IMO.
If you are looking for the most bang for your buck, I would go for Nutro. That's only my opinion, though. I have heard good things about Chicken Soup, but never tried it. I have seen bags of Wellness dry food, but never tried it. I have also seen bags of Eagle Pack kitten food, but never tried it either. My two don't like the canned Eagle Pack, so I don't know if they will like the dry.
As far as being confused, I think you, me, & menagerie mama are all in the same boat.
It is quite confusing & takes a lot of time to learn this stuff, but eventually you will get the hang of it. I am starting to.
Oh yeah, sharky has excellent advice, too. Sharky's helped me out a lot! Thanks sharky!