Pros: Great varieties of different protein, high quality, grain-free, cats love
Cons: Minimal amount of whole peas, diced carrots in can, pricey
I buy these four proteins and rotate them, along with other brands that also include chicken and turkey products. I just don't want my cats to eat too much of one protein, so I look for other brands like NV to rotate with. I like NV Instinct because as one reviewer also noted, the large 13.2 oz cans in the dog section is the same formulation for felines, so I buy the big cans to save some money. My cats seem to like all the varieties except lamb, but I don't think it's exclusive to NV. I also like that it's grain-free and their rabbits are no longer sourced from China. My two cat's favorite flavors include rabbit, duck, and venison proteins, which is why I like buying this product. Not many others offer this much variety in proteins, it's usually chicken, turkey, and fish flavors that I frequently see. If you have a cat with IBD or food allergies, it also has some flavors in LID (limited ingredient diet) types, too.
The only negative thing I found is that I don't like the added peas and diced carrots as I do not believe felines can properly digest and metabolize plant based ingredients, but they are whole and I can easily pick them out as I dish them onto their plates. It's also more on the expensive side as all NV products are, but again, that is why I buy the large doggie cans instead.