Unless they're eating something completely unbalanced (like only white meat boiled chicken, and nothing else, no supplements etc.), I wouldn't worry too much, I'd keep some of the Merrick handy just in case he goes on a strike (they like to do this just to see us turn funny colors and watch us scramble for something they'll eat
) but there's more to health than just food. 
I think you're doing fine!
Im wondering same thing about my Snowball n Fancy Feast.Hes almost 11 yrs old
Myvet said same thing that fancy feast wasnt healthy to a point
mizzely
that Fancy Feast Classics are pretty decent food: they've very low-carb foods with no filler (IMHO, I'd much rather feed animal-based byproducts than, say, potatoes, peas, lentils, or chickpeas), unlike plenty of more expensive foods some of which also have relatively high phosphorous. Expensive doesn't guarantee specific-appropriate -- it's so important to read labels and study up on the numbers for individual foods, particularly if your cat has a health issue!
Do what we do, open the new can of food and then act like there's no possible way the cats can even sample it. I tell them it's for the dogs, which really makes them mad. Then they get demanding, we pretend to give in, and they devour itI've tried time and time again with different foods - thinking maybe, just maybe she'll think it's a Fancy Feast offering but with new texture/flavor!
Yes, my cat (and previous) love FF pates.
If I get lucky she'll eat Friskies once in awhile, but I try not to because those poops stink something awful.
Apparently the price on the can bares no relevance to my little princess's preference. So she's slumming it with FF
Nevertheless, I have a case of Holistic Select chicken pate in the closet, thinking maybe someday I can try sneaking it in her dish again. Heck it looks & smells decent enough, I might try it.
Yea im givn my baby fancy feast gravy lovers.Had gave couple years back n tried some others like wellness etc n dont like as good as fancy feast so thats what shes on now til she says no mommy lol
My cat loves these but be careful, they have a lot of wheat gluten in them, so I don't feed them very often.
Can that wheat gluten cause face allergy
Wheat gluten is a vegetable-based product that raises the protein numbers for cat food. Cats, though, are carnivores: they need meat protein not wheat protein. Wheat gluten also contains carbohydrate calories, which are basically empty calories for a cat.
